Answer: See Below
Explanation:
1. A probe will bind to a particular DNA sequence if it is present in a sample indicating its presence or absence.
2. Review southern blotting.
3. Southern blotting uses hybridization of a probe to a target sequence to identify if the target DNA is present.
the main differences between hormonal coordination and nervous coordination (3 marks).
Hormonal coordination and nervous coordination are two different ways by which organisms regulate and coordinate their bodily functions.
What is nervous coordination?Nervous coordination is the process of communication and coordination between different parts of the body through the nervous system. The nervous system consists of neurons, which transmit electrical signals or nerve impulses from one part of the body to another. These impulses help in controlling and coordinating various functions such as movement, sensation, and cognition. Nervous coordination is responsible for rapid responses and reactions to internal and external stimuli.
Here,
The main differences between these two forms of coordination are:
Speed: Nervous coordination is much faster than hormonal coordination. Nervous impulses can travel at speeds of up to 120 meters per second, while hormones travel much more slowly through the bloodstream.
Duration: Hormonal effects last much longer than nervous effects. Hormones can continue to have an effect on the body for hours or even days, while nervous impulses are typically short-lived.
Specificity: Nervous coordination is very specific, meaning that it can target very precise areas or organs in the body. Hormonal coordination, on the other hand, is more general, affecting multiple organs or tissues throughout the body.
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A breed of chicken shows incomplete dominance for feather color. One dominant allele codes for black feathers, another dominant allele codes for white feathers. The feathers of heterozygous chickens of this breed will be
You combine 10ml of an acid with a pH of 5 with 10mL of a base with a pH of 9. What would the result of this reaction be? What is the new pH?
Determine the new pH:
pH = −log 0.0802 = 1.096
To two sig figs, the answer is 1.10.
When 10 mL of a powerful acid are combined with 10 mL?The temperature increases by 5oC when 10mL of a strong acid is introduced to 10mL of an alkali.
The temperature increases by 5oC when 10 mL of a strong acid and 10 mL of an alkali are combined.
When 5 mL of a strong base are added, the temperature of the 5 mL of a strong acid rises by 5oC.
If the solvent is 100 ml, then the mass of the solute will be either 10 gram or 10 ml since a 10% solution signifies that the solute is only 10% in the solution.
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in describing prenatal development to her friends, michonne wants to identify the three main periods of prenatal development in order from conception to birth. michonne uses the following order: embryonic, germinal, and fetal fetal, embryonic, and germinal germinal, embryonic, and fetal germinal, fetal, and embryonic
Michonne should use the order germinal, embryonic, and fetal to accurately describe the three main periods of prenatal development.
Prenatal development begins with fertilisation and continues through the foetal stage of development until delivery. Prenatal development in human pregnancy is also known as antenatal development. Following fertilisation, the human embryo develops further throughout the foetal stage.
The germinal period is the first two weeks after conception, during which the fertilized egg implants in the uterus and begins to divide and form the placenta.
The embryonic period is from the third to the eighth week after conception, during which the major organs and structures of the body begin to develop.
The fetal period is from the ninth week after conception until birth, during which the fetus continues to grow and develop.
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How is churning method useful? Explain.
Answer: Churning physically agitates the cream until it ruptures the fragile membranes surrounding the milk fat. Once broken, the fat droplets can join with each other and form clumps of fat, or butter grains.
Explanation: It physically agitates the cream until it ruptures the fragile membranes surrounding the milk fat. Once broken, the fat droplets can join with each other and form clumps of fat, or butter grains.
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which of the following statements about chloroplasts is false? thylakoids are usually arranged in stacks (grana). the stroma contains the enzymes responsible for the light-dependent reactions. the stroma is analogous to the matrix of the mitochondria. both the light-dependent (light) and carbon-fixation (dark) reactions occur in the chloroplasts. the role of chloroplasts is to capture light energy.
The stroma contains the enzymes responsible for the light-dependent reactions .This statement that is false about chloroplast .
Thylakoids are usually arranged in stacks (grana). The stroma is similar to the matrix of the mitochondria, but they do not perform the same function. The light-dependent reactions occur in the thylakoids, and carbon-fixation (dark) reactions occur in the stroma.The function of chloroplasts is to capture light energy and transform it into food through the process of photosynthesis. In addition, they are also responsible for providing a green pigment to plants that are responsible for their coloration.
However , The stroma contains the enzymes responsible for the light-dependent reactions this statement is false .
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After 20 years, the plants in area A had a greater biomass than those in area B. Explain how abiotic (non-living) factors could cause this difference.
After 20 years, plants in zone A have higher biomass than plants in zone B due to abiotic factors such as (more) (sun) light, water/rainfall, photosynthesis and warmer/higher temperatures .
Abiotic factors are the non-living components of an ecosystem that affect its environment. Examples could be light, water and temperature in terrestrial habitats. The abiotic elements of marine ecosystems are salinity and ocean currents.
In addition to photosynthesis, the following abiotic factors can also cause plant differences:
1. (more) light (from the sun);
2. water/rain;
3. warmer/higher temperature;
4. enzymes;
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What is heterozygous and homozygous????
Answer:
Homozygous and heterozygous are terms that are used to describe allele pairs. Individuals carrying two identical alleles (RR or rr) are known as homozygous. While individual organisms bearing different alleles (Rr) are known as heterozygous.
6. The diagram below summarizes some of the steps in the development of humans. O + O D A B C All the genetic information needed for the organism to develop is first present at
All the genetic information needed for the organism to develop is first present in the fertilized egg.
What is a fertilized egg?A fertilized egg, also known as a zygote, is the initial stage of development of a new organism that occurs when a sperm cell penetrates and merges with an egg cell.
This process is called fertilization or conception, and it results in the formation of a single cell that contains all the genetic material necessary to create a new individual. The fertilized egg then begins to divide and differentiate into specialized cells and tissues, eventually forming a fully developed organism
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transduction refers to the . group of answer choices disappearance of visual stimuli. translation of one form of energy to another. transmission of sensory signals to the cortex. perception of lights.
Transduction refers to the translation of one form of energy to another.
What is Transduction?Transduction is the method of converting a physical energy stimulus into an electrical signal that can be transmitted through the nervous system. It is the process of converting one form of energy into another, specifically, converting physical stimuli into an electrical signal that can be transported via the nervous system.
Transduction allows sensory neurons to detect energy, such as light or sound waves, and convert it into an electrical signal that is then transported to the central nervous system. This electrical signal can then be interpreted by the brain, allowing us to detect and perceive the world around us.
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A cub will learn how to hunt by watching and copying its mother, which is a/an ___________ behavior.
Instinctive
Learned
Answer:
Learned behavior
Explanation:
Its really simple because if you are watching someone about what they are doing about something you don't know about its learned behavior. Like hunting, like the problem.
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Honor biology transport problems please help
Transportation is the movement of substances from one place to another, including water, nutrients, waste material, and excretory products.
What is transportation in biology?In biology, the term "transport" describes the action of moving a particle or ion across a cell barrier or through the circulation. In this respect, there are two different kinds of transportation: passive transportation and active transportation. An area of greater concentration is moved to an area of lower concentration through the process of passive transport, which involves the movement of ions or molecules along a concentration gradient.
Passive movement can be divided into four main categories: diffusion, assisted diffusion, filtration, and osmosis. Ions or molecules travel in opposition to a concentration gradient during active transport.
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q8. phylogenetic reconstruction can be obscured by homoplasy, rapid diversification, and introgression. for each of these complications, describe how researchers can identify them, and suggest a method to avoid the problem in order to create a robust phylogenetic tree.
Phylogenetic reconstruction can be obscured by homoplasy, rapid diversification, and introgression. These complications can make it difficult for researchers to accurately determine the evolutionary relationships between different species. However, there are ways to identify and avoid these problems in order to create a robust phylogenetic tree.
1. Homoplasy: Homoplasy occurs when two or more species have similar traits that are not due to common ancestry, but rather due to convergent evolution or parallel evolution. To identify homoplasy, researchers can use methods such as parsimony analysis or likelihood analysis.
These methods can help determine whether the similarity between traits is due to common ancestry or homoplasy. To avoid the problem of homoplasy, researchers can use multiple independent characters to reconstruct phylogenetic relationships.
2. Rapid diversification: Rapid diversification occurs when a group of species undergoes a burst of speciation events in a short period of time. This can make it difficult for researchers to accurately reconstruct the evolutionary relationships between these species.
To identify rapid diversification, researchers can use methods such as coalescent analysis or Bayesian analysis. These methods can help determine the likelihood of different phylogenetic relationships between species. To avoid the problem of rapid diversification, researchers can use multiple independent characters and incorporate fossil evidence to reconstruct phylogenetic relationships.
3. Introgression: Introgression occurs when two or more species hybridize and exchange genetic material. This can make it difficult for researchers to accurately reconstruct the evolutionary relationships between these species. To identify introgression, researchers can use methods such as genetic analysis or phylogenetic network analysis.
These methods can help determine the extent of gene flow between different species. To avoid the problem of introgression, researchers can use multiple independent characters and incorporate fossil evidence to reconstruct phylogenetic relationships.
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Pleaseeeee helppppppppp
The correct option is C; The population reached carrying capacity and stabilized .
What happens if a population reaches carrying capacity?If a species' population surpasses its carrying capacity, the ecosystem may become unfit for survival. If the population outnumbers the carrying capacity for an extended length of time, resources may be destroyed totally. If all resources are depleted, populations may perish.
Biologists frequently use graphs to demonstrate population growth patterns. An "s" shaped graph shows that the population has reached its carrying capacity. In this logistic (S-curve) model, population growth is proportional to population size but also to available resources. Limited resources cause competition and poorer growth rates at increasing population densities. Ultimately, the population stabilizes and the growth rate falls to zero.
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4. Solve this dihybrid Punnett square problem. In Pea Plants T is the allele for the dominant, tall characteristic; t is the allele for
the recessive, short characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive,
green color characteristic. Cross two pea plants that are heterozygous for
both height and seed color. Determine the genotypes of the offspring.
Calculate the phenotypic ratio of the offspring.
How many will be tall and yellow?
How many will be tall and green?
How many will be short and yellow?
How many will be short and green?
A phenotypic ratio is a numerical comparison of two phenotypes that demonstrates how frequently the occurrence of one trait corresponds with another.
Which allele for tall pea plants is dominant?As the yellow seeds are dominant to green, the allele for yellow seeds should be indicated with upper case letter while the one for green seeds should be written in lower case letter. Assume that Y is the allele for yellow seeds and y is the allele for green seeds.
The genotype of the heterozygous yellow-seeded plant will thus be "Yy," whereas the genotype of the green-seeded plant will be "yy" (as the recessive allele is expressed only in homozygous conditions). The cross between heterozygous yellow seeded plant and green seeded plant will produce 50% yellow seeded plants and 50% green seeded plants.
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what are the three distinguishable regions of the body of a mollusk? group of answer choices muscular foot centrally concentrated visceral mass periostracum fleshy mantle
The three distinguishable regions of the body of a mollusk are the muscular foot, the centrally concentrated visceral mass, and the fleshy mantle.
Mollusks are soft-bodied animals with hard shell that is often visible. Their bodies are bilaterally symmetrical, which means that their left and right sides are identical. Mollusks come in a variety of shapes and sizes and can be found in a variety of environments. Mollusks are an extremely diverse group of animals, including clams, snails, and squids.
The three distinguishable regions of the body of a mollusk are:
Muscular foot: This is the part of the mollusk's body used for movement, which is located at the base of the animal.
Centrally concentrated visceral mass: This is part of the mollusk's body that contains internal organs, such as the heart, digestive system, and reproductive system.
Fleshy mantle: This is a fold of tissue that covers the visceral mass and is responsible for the production of the mollusk's shell. In some mollusks, the mantle also has other functions, such as respiration or the secretion of mucus for locomotion.
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Besides storage, what does a vacuole provide in a plant cell?
Answer:
Help Maintain water balance.
Explanation:
The plant vacuole can store minerals, water, etc. But also, the plant vacuole can regulate water balance.
Cross a plant that is heterozygous for axial flowers with a plant that has terminal flowers. What is the genotypic and phenotypic ratio
The progeny will have a 1:1 phenotypic ratio, with 50% of the offspring displaying axial flowers (Aa) and 50% displaying terminal flowers (aa).
When crossing a plant that is heterozygous for axial flowers (Aa) with a plant that has terminal flowers (aa), we need to consider the possible gametes that each parent can produce.
The heterozygous plant (Aa) can produce two types of gametes, one with the dominant allele A and one with the recessive allele a. The plant with terminal flowers (aa) can only produce gametes with the recessive allele a.
To determine the genotypic ratio of the offspring, we can use a Punnett square. The Punnett square will have two rows representing the possible gametes of each parent and two columns representing the possible alleles for the offspring.
A a
a Aa aa
a Aa aa
From the Punnett square, we can see that there are two possible genotypes for the offspring: Aa and aa. Each of these genotypes has a 50% chance of occurring. Therefore, the genotypic ratio of the offspring is 1:1 (Aa:aa).
To determine the phenotypic ratio of the offspring, we need to consider the expression of the dominant allele A. The dominant allele A causes axial flowers, while the recessive allele a causes terminal flowers. Since the heterozygous plant has one copy of the dominant allele A, it will exhibit the axial flower phenotype. Therefore, only the offspring with the aa genotype will exhibit the recessive terminal flower phenotype.
Thus, the phenotypic ratio of the offspring will be 1:1, with 50% of the offspring exhibiting axial flowers (Aa) and 50% exhibiting terminal flowers (aa).
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a mutation that stops the production of acid (h ) in the stomach such that no acid is ever produced would most likely lead to: (hint: draw out the diagram): group of answer choices an ulcer (injury in the stomach) a failure to produce pepsinogen a build-up of pepsin in the stomach a build-up of pepsinogen in the stomach inadequate mucus production from the lining of the stomach
If there is a mutation that halts the production of acid (H+) in the stomach so that no acid is ever produced, it would most likely lead to Failure to produce pepsinogen. The correct answer is A
Pepsinogen is released in the stomach by cells called Chief cells. This inactive form of pepsinogen converts into pepsin when it comes in contact with the stomach acid in the stomach lumen. However, if there is no acid produced, then pepsinogen would not be converted to pepsin that can digest proteins.
Therefore, this would lead to the failure to produce pepsinogen.
Symptoms and Significance: A mutation that stops the production of H+ in the stomach could cause symptoms like abdominal pain and bloating. Pepsinogen will remain in its inactive form, and the acid barrier that normally protects the stomach against bacteria, viruses, and other harmful substances will be disrupted as well.
This condition is known as hypochlorhydria or achlorhydria and can result in bacterial overgrowth in the stomach, leading to infections like Helicobacter pylori.
Inadequate mucus production from the lining of the stomach could lead to ulcers, a build-up of pepsinogen in the stomach, and a build-up of pepsin in the stomach, but none of these conditions are expected to occur if there is a mutation that stops the production of acid (H+) in the stomach, since acid is required for these conditions to develop.
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in what way is the pupil reflex different from some other reflexes?
A A change in the environment causes impulses in the sensory neurone
B The function of the reflex is protective
C The relay neurones are in the brain
D The response occurs quickly
Answer: The Answer is A
Explanation:
Scientists Are concerned that melting glaciers are exposing long frozen animals. Which the ice melts, the animal style and begin to decompose. How will this affect the amount of CO2 in the atmosphere?
Carbon dioxide levels in the atmosphere rise as a result of decomposition.
Decomposition has a significant impact on the amount of carbon dioxide in the atmosphere because it releases carbon dioxide into the atmosphere, adding to the already existing carbon dioxide.
As the earth's atmosphere becomes warmer as a result, we can infer that the decomposition process causes a rise in the atmospheric concentration of carbon dioxide gas. The melting of glaciers that exposes long-frozen animals could potentially increase the amount of carbon dioxide (CO2) in the atmosphere.
When an organic matter like plants and animals decomposes, they release CO2 into the atmosphere through a process called respiration. If these animals were to decompose rapidly, as may happen if they are exposed to warm temperatures due to melting glaciers, the amount of CO2 released could increase.
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Differentiate between the way in which muscle cells and cells of sensitive plant change their shape
Muscle cells change their shape by contracting and relaxing due to the movement of actin and myosin filaments, while cells of sensitive plants change their shape through thigmonasty, which involves the rapid movement of water into specialized cells.
Muscle cells change their shape by contracting and relaxing, which is enabled by the movement of actin and myosin filaments within the cell. These filaments slide past each other, causing the muscle cell to shorten and thicken. This movement is controlled by the nervous system and allows for movement and force generation in the body.
On the other hand, cells of sensitive plants change their shape through a process called "thigmonasty." When a sensitive plant is touched or shaken, specialized cells within the plant release potassium ions, causing water to rapidly move into these cells. This rapid influx of water causes the cells to swell and change shape, which can lead to the plant closing its leaves or bending its stems. Thigmonasty is a mechanism used by plants to protect themselves from predators or environmental stressors.
In summary, muscle cells change shape by contracting and relaxing due to the movement of actin and myosin filaments, while cells of sensitive plants change shape through thigmonasty, which involves the rapid movement of water into specialized cells.
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A marine biologist is studying Prochlorococcus, a cyanobacteria that conducts photosynthesis to manufacture its own food. In what ocean zone is the biologist likely to find most of these organisms?
A.
sunlight
B.
twilight
C.
midnight
D.
deep
Answer:
The answer is A.
Explanation:
A marine biologist is likely to find most Prochlorococcus organisms in the sunlight zone of the ocean, which is also called the euphotic zone. This zone is characterized by abundant sunlight, which is necessary for photosynthesis to occur.
Everything is made of tiny atoms. Each of these atoms is made up of a core that has a positive charge, and some electrons that circle around the core. These have a negative charge. When these electrons move around in a substance and between substances, an _______________ is created.
A. uneven charge
B. even charge
When electrons move around in a substance and between substances, a uneven charge is created.
option A.
What happens when electrons move around in a substance?When electrons move around in a substance or between substances, they can create an uneven distribution of electric charge, leading to the creation of an electric field. An electric field is a physical field that surrounds an electrically charged object and is capable of exerting a force on other charged objects within its vicinity.
The movement of electrons within and between substances can lead to the creation of an electric field and an uneven distribution of electric charge.
Thus, when these electrons move around in a substance and between substances, a uneven charge is created.
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Answer: A. uneven charge
Explanation:
Please help!!!
Which of these is MOST LIKELY an indication that cells may have become cancerous?
A. Cells undergoing slower rates of mitosis
B. Cells with few or no mutations
C. Cells not responding to checkpoints in the cell cycle
D. Cells with decreased rates of protein synthesis
Answer: Cells not responding to checkpoints in the cell cycle
Explanation: Cell cycle checkpoints are surveillance mechanisms that monitor the order, integrity, and fidelity of the major events of the cell cycle . So if they do not respond that indicates that something is wrong . The areas include the G1/S transition, where most cancer‐related defects occur, the G2/M checkpoint and its activation in response to DNA damage, and the spindle checkpoint.
The most likely indication that cells may have become cancerous is C, cells not responding to checkpoints in the cell cycle as cell cycle checkpoints are critical control points that ensure the proper progression of the cell cycle.
what is Cancer ?Cancer is a disease characterized by the uncontrolled growth and division of abnormal cells. Normally, cells in the body grow and divide in a controlled manner, with checkpoints in the cell cycle that ensure that the cell is ready to progress to the next stage of the cycle. These checkpoints ensure that DNA is replicated correctly and that the cell is ready to divide. In cancer cells, mutations can occur that disrupt the normal regulation of the cell cycle checkpoints.
Hence, he most likely indication that cells may have become cancerous is C, cells not responding to checkpoints in the cell cycle as cell cycle checkpoints are critical control points that ensure the proper progression of the cell cycle.
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explain why you have trouble seeing colors as clearly at night as you do during the day
Cones and rods are both gentle. The rods let us see in extremely low light but do not allow the detection of light, whereas the discs allow us see tint but do not work in low light. Cones lose their capacity to react to light when it turns dark.
Why is nighttime colour vision so challenging?Cones & rods are both light-sensitive. The rods let us to see in extremely low light but do not permit the detection of colour, whereas the cones provide us to see colour but do not function in low light. Cones lose their capacity to react to light as it gets dark.
Why am I unable to see properly at night?Nyctalopia, often known as night blindness, is the inability to go see well at nighttime or in dimly lit environments like a restaurant or theatre. It is frequently linked to a difficulty to swiftly adjust from a brightly light to a dimly lit area.
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Explain how plants obtain the materials they need for cellular respiration. Be specific! How do these materials get from the environment to the mitochondria? And Explain how consumers, such as otters, obtain the materials they need for cellular respiration. Be specific! How do these materials get from the environment to the mitochondria?
Plants obtain the materials they need for cellular respiration from a mechanism called photosynthesis, which involves the generation of biomolecules in the chloroplast while animals such as otters obtain the materials they need for cellular respiration from biomolecules of other organisms as they are heterotrophs.
What are autotrophs and heterotrophs in an ecosystem?Autotrophs and heterotrophs in an ecosystem are organisms that obtain required biomolecules as nutrients on their own and others, respectively, which are required to produce energy by cellular respiration.
Therefore, with this data, we can see that autotrophs and heterotrophs obtain energy by different methodologies.
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which vitamin help us to the formation of sperm
Answer: Vitamin B-12
Explanation:
Vitamin B-12 B12 is essential to the sperm production process.
compare your dna sequence from question 7 to that prepared by the others in the lab any variations did such variations occur in your answer to question 4 what is the reason for the difference are there any advantages to these variations what are they
The DNA sequence I prepared for question 7 was compared to those prepared by the others in the lab. Any variations that occurred in my answer to question 4 were due to differences in the base pairing of the two sequences. There could be some advantages to such variations, as different base pairings can lead to different biological functions.
To do this, I will need to carry out a comparative analysis between the DNA sequence that I have prepared and the ones that were prepared by others in the lab.
For the variations that occur in question 4, we will look at the reason for the differences. These variations can occur due to many reasons. The reason for the differences can be due to the presence of mutations in the DNA sequence. It can also be due to the presence of different alleles in the DNA sequence.
There are certain advantages to these variations. Some variations can provide organisms with an advantage in their environment, making it easier for them to survive. Variations can also be used to identify individuals in a population, making it easier to understand how populations change over time.
However, it is important to note that these variations can also lead to the development of diseases in humans. Some variations can also lead to the development of cancer, which is why it is important to monitor and study these variations carefully.
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Dominant or recessive are terms used to describe the inheritance patterns of certain traits and help to identify how certain phenotypes pass from parent to offspring.
True
False
Answer:
True.
Explanation:
Dominant traits are traits that have A alleles, which dominate and is expressed in the individual or thing. On the other hand, recessive traits have a alleles, and do not show up* (unless there is no dominant allele), but is still transferred as a possibility later on in the line.
This can be exemplified with the Punnett Square for offsprings. Take for example, A original parent with two dominant alleles, and another parent with one dominant and one recessive:
[tex]\left[\begin{array}{ccc}&A&A\\A&AA&AA\\a&Aa&Aa\end{array}\right][/tex]
In the given Punnett Square, the dominant trait is present for all potential offsprings, and therefore the dominant trait will show.
However, take for example mates in which a parent has one dominant allele and one recessive, while the other parent has two recessive:
[tex]\left[\begin{array}{ccc}&A&a\\a&Aa&aa\\a&Aa&aa\end{array}\right][/tex]
In this case, in the given Punnett Square, the dominant trait is present in 50% of potential offspring, while the recessive trait is visible in 50% of potential offsprings.
Therefore, dominant and recessive are used to identify phenotypes passed from parents to offspring, and whether or not such phenotypes are apparent.
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