Answer:
F1) 100% bbRr, red flowered plants.
Explanation:
Available data:
flowers may be yellow, blue, red, or mauvecolors may be true-breedingthe cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowersF2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).
According to the first cross, we might establish the following genotypes:
1st Cross: blue-flowered plant x red-flowered plant
Parentals) BBrr x bbRR
Gametes) Br, Br, Br, Br bR, bR, bR, bR
F1) 100% BbRr, yellow plants
Parentals) BbRr x BbRr
Gametes) BR, Br, bR, br
BR, Br, bR, br
Punnett square) BR Br bR br
BR BBRR BBRr BbRR BbRr
Br BBRr BBrr BbRr Bbrr
bR BbRR BbRr bbRR bbRr
br BbRr Bbrr bbRr bbrr
F2) 9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR
3/16 blue ------> 1/16 BBrr + 2/16 Bbrr
3/16 red---------> 1/16 bbRR + 2/16 bbRr
1/16 mauve ----> 1/16 bbrr
So,
Yellow-flowered plants: BBRR, BBRr, BbRR, BbRrRed-flowered plants: bbRR, bbRrBlue-flowered plants: BBrr, BbrrMauve-flowered plants: bbrrAccording to these genotypes, the second cross would be like following,
2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.
Parentals) bbRR x bbrr
Phenotype) Red Mauve
Gametes) bR, bR, bR, bR br, br, br, br
Punnett square) bR bR bR bR
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
F1) 100% bbRr, red flowered plants.
describe Convection current in ur own words pls
Answer:
Like the distribution of heat, like a boiling pot of water the heat circulates through the pot- convection
Explanation:
Answer:
A process that involves the movement of energy from one place to another. It is also called convection heat transfer.I am a rock entering a planet's atmosphere. *
A. Asteroid
B. Star
C. Meteor
D. Comet
Explain how our body systems work together to get oxygen into and around our body
PLS DONT COPY AND PASTE THE ANSWER FROM THE INTERNET
The respiratory system and lungs work very closely with the cardiovascular system for the uptake and elimination of gases and the distribution of energy in the body.
How Oxygen from the air is absorbed?Oxygen from the air is absorbed into the bloodstream through the lungs. When it reaches the lungs, the function of the cardiovascular system begins, since that is where the non-oxygenated blood is oxygenated and returns to the heart.
When in the cardiovascular system, the blood reaches the capillaries in the tissues, oxygen is released, which the cells use to produce energy. These cells release waste products, such as carbon dioxide and water, which are absorbed and transported by the blood.
O2 and CO2 are constantly circulating and passing from one medium to another, so much so that O2 passes, along with other gases, from the atmosphere to the airways, entering through the nostrils and driving through the larynx, trachea, source bronchi, terminal bronchioles, respiratory bronchioles, alveolar sacs and alveoli.
Therefore, The respiratory system and lungs work very closely with the cardiovascular system for the uptake and elimination of gases and the distribution of energy in the body.
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Matter and energy both can neither be created or destroyed
True or false
Please explain thank you!
Answer:
true
Explanation:
Both the initial and final substances are composed of atoms because all matter is composed of atoms. According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and type of atoms after the chemical change as were present before the chemical change.
Most organic compounds contain carbon and _____.
I know that the blank that would be filled in is oxygen, but why would it be oxygen?
Answer:
The blank is not to be filled with only oxygen organic compounds also contain other elements such as hydrogen, nitrogen, phosphorus and sulphur.
Hope this was of some help
Hope this was of some help ALL THE BEST !!
Which of the following is a characteristic property of matter that could be used to identify an unknown substance?
1)Mass
2)Density
3)Volume
4)Temperature
Answer:
4) temperature
Explanation:
The bottom or base of an energy pyramid consists of ____.
Answer:
producers
Explanation:
which of these are is a benefit of GMO's
Help please I will give brainliest
Answer:
Explanation:
1. The Troposphere is the First Layer, it contains where all the weather occurs
2. The Stratosphere, (2nd layer) has the Ozone Layer included
3. The Mesosphere is the coldest layer of the atmosphere
4. The Thermosphere gets the most Sun UV radiation
5. The Exosphere is where satellites orbit
Hope this helps!
HELPPP
A vertebrate depends on a variety of body systems, including the nervous, respiratory, digestive, circulatory,
skeletal, and muscular systems. Which statement BEST describes the relationships among the systems?
A )Each system works independently, but may sometimes complete tasks that generally are performed
by another system
B)Each system works independently and depends only minimally on other systems.
C )Each system typically works together with other systems, but sometimes functions independently.
D) Each system works closely with other systems, and could never function independently.
Answer:
D a system could never work independently they all are dependent on each other to peform its given function
What might a doctor give to someone who is infected with a bacterial disease such as Gonorrhoea?
a.) An Antibiotic
b) Antiviral Medication
c.) An Antiseptic d.)Antifungal Medication
Answer:
B: Antibiotics
Explanation:
Antivirals treat viruses, antifungals treat fungi, and OTC treatments are merely symptomatic treatment. Antibiotics typically dissolve the cell wall of bacteria meaning they explode, so they actually kill the bacteria.
Explain why when two balls are dropped onto a trampoline the ball that hits second flies higher than the first?
Answer:
because the first ball adds pressure to the trampoline already so when the second one hits it doesnt have anything to slow it down so it goes higher because nothing slowed it down unlike the first ball where the pressuer it applied on the trampoline slowed ball 1 down
Explanation:
Many inland wetlands have been drained or filed to grow crops or have been covered with concrete, asphalt and buildings true or false
Answer:fales
Explanation:
Phases of meiosis//// ANSWER PLEASE
Answer: Anaphase I, Anaphase II, Prophase I, Metaphase I, Metaphase II, Telophase I, Prophase II, Telophase II
Explanation:
5. Which of the following is a non-flowering plants?
A cypress
B. santan
C. rose
D. yellow bell
☹️ paki answer
Answer:
cypress
Explanation:
because this plants is one of the non flowering plants
Answer:
cypress
Explanation:
I have seen it around on my father's friend house they say its cypress and there was no flower in it
Describe the structure of DNA and how this structure allows DNA to carry out its function. (6 marks)
Answer:
DNA is someone's identity representing who they are, it helps people function through there daily lives
Explanation:
Biomagnification __________.
a.
causes a 90% loss of synergy higher on the food chain
b.
is caused by the ecological succession from a disturbed area to a climax community
c.
is introduced into an ecosystem through nonpoint pollution sources
d.
happens when an increased concentration of a substance accumulates in body tissues
e.
is the transportation of pollution from one ecosystem to another
Answer:
Ada transportation of pollution from one ecosystem to another
Answer:
d.
happens when an increased concentration of a substance accumulates in body tissues
Explanation:
The definition of biomagnification is "Any concentration of a toxin in tissues of tolerant organisms at successively higher levels in a food chain"
Complete the concept map about the different modes of asexual reproductive.
Answer:
there are a number of types of asexual reproduction including fission, fragmentation, budding,vegetative reproduction, spore formation and agamogenesis.spore formations occurs in plants, and some algae and fungi, and will be disscused in additional concepts, binary fission in various single- celled organisms (left).
Explanation:
HOPE IT HELPS PO(◍•ᴗ•◍)❤
How do the nutrients found in plants function in plant DNA? Is the function of plant DNA similar to human DNA?
Answer:
How do the nutrients found in plants function in plant DNA?
Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps.
Is the function of plant DNA similar to human DNA?
How much DNA do plants share with humans? Over 99%? ALL animals and plants share the same DNA which is basically a code of only 4 'letters' which code for the same amino acids from which all proteins are made.
Explanation:
Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves.
How much DNA do plants share with humans? Over 99%?ALL animals and plants share the same DNA which is basically a code of only 4 'letters' which code for the same amino acids from which all proteins are made.
Thus, these are the correct answer.
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l. A farming area developed a major locust problem. Swarms of locusts were destroying crops and the environment. A team of
scientists developed an infectious disease that would reduce the population of locusts What would be most important to find
out before producing and releasing the disease?
how a decreased number of locusts would affect other organisms
which species might eat the crops in the absence of locusts
how the disease can be used for other applications
O how quickly farmers would get to see the results
Answer: how a decreased number of locusts would affect other organisms.
Explanation:
When engaging in any action aimed at destroying large numbers of an organism as is the case here, there is always a need to check what impact it might have on the ecosystem at large.
This is why it is very important that the effect of a decreased number of locusts on other organisms is evaluated before such drastic action is taken. If it would lead to a situation where the ecosystem is destabilized, the consequences would be far reaching and very damaging.
How a decreased number of locusts would affect other organisms is the
most important to find out before producing the disease.
What is Population?This is referred to the number of organisms present in an area over a
specific period of time.
We were told that swarms of locusts destroyed the environment and
needed to be reduced through the creation of a disease. The effect the
decrease in locust has on other organisms has to be considered to ensure
the ecosystem is balanced and doesn't adversely affect others.
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Which part of the plant cell provides protection and structural support
Answer:
cell wall provides protection and structural support
Cell Wall provides the structural support and protection.
Drag the steps into the correct order to show how plants use energy from the sun. Start with the first step on top.
The sun shines on a plant.
The plant makes sugar and oxygen.
Chlorophyll traps energy from the sun.
Cells use sugar for energy.
PLEASE ANSWER QUICK! WILL GIVE 5 STARS AND A THANKS IF CORRECT. mAYBE BRAINLIEST AS WELL
Answer:
1. The sun shines on a plant 2.chlorophyll traps energy from the sun 3. the plant makes sugar and oxygen 4.cells use sugar for energy
Explanation:
this might be
Which accurately describes gymnosperms? Select three options. Some of them lose their leaves in winter. Some of them lack seeds. Some of them grow small flowers. They are the oldest type of seed plant. They include the tallest plants. They have female cones that produce pollen.
Answer:
Some of them lose their leaves in the winter, they are the oldest type of seed plant, and they include the tallest type of seed plants
Explanation:
Gymnosperms are those which grow small flowers, they are the oldest type of plant with seeds, and female cones that produce pollen. So, the correct options are C, D and F.
What are Gymnosperms?Gymnosperms are defined as vascular plants that reproduce by means of an exposed seed, or ovule, such as angiosperms, or flowering plants, whose seeds are surrounded by mature ovaries or fruits. The seeds of many gymnosperms are produced in cones and do not appear until maturity.
Gymnosperms are found in temperate forest and boreal forest biomes where the some common types of gymnosperms are conifers, cycads, ginkgoes, and gnetophytes.
Thus, Gymnosperms are those which grow small flowers, they are the oldest type of plant with seeds, and female cones that produce pollen. So, the correct options are C, D and F.
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Which DNA strand is complementary to TGTAGCTGCGCGT?
Answer:
ACATCGACGCGA
Explanation:
In DNA
adenine pairs with thymine
cytosine pairs with guanine
In dividing cells, most of the cell's growth occurs during “_____”
Answer:
In dividing cells, most of the cell's growth occurs during interphase. 5. The mitotic spindle(s) is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.
During interphase, DNA replication and cell expansion take place. During the mitotic phase, the cell divides and the DNA replication and cytoplasm are segregated.
What is the role of interphase in cell growth?The majority of a cell's time is spent in the phase known as interphase, during which it matures, copies its chromosomes, and prepares to divide. The cell then completes mitosis, leaves interphase, and divides to completion.
During the mitotic (M) phase, the cell splits into two new cells by dividing its cytoplasm and DNA into two sets.
Chromosomes will line up, split, and move into new daughter cells during mitosis. Interphase occurs between one mitotic (M) phase and the next because the prefix inter- signifies between.
Therefore, in dividing cells, most of the cell's growth occurs during interphase.
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Which phrase best describes the rock’s texture
Answer:
Is there an answer choice to choose from but if not a rocks texture includes.
Explanation:
Rocks are made of minerals. ... Sedimentary rocks sometimes are "gritty" or feel like sand. So students should being to feel rocks to get a sense of their texture. Metamorphic rocks tend to be "shiny" like a rock that has many rhinestones.
The haploid number is 60, so that means the diploid number is *
A) 60
B) 120
C) 30
D) 15
PLEASE HELP
Answer:
option B- 120
Explanation:
haploid(n) means a complete set of chromosomes, haploids have half number of chromosomes of a diploid(2n) organism. while diploid means two complete set of chromosomes.
What cellular processes (2) are "hijacked" by the virus?
How the Medical Assistant should evaluation a site for drug administration and why. 
Answer:
In general, documentation should include the date and time administered, medication name and dose, route of administration, site of administration (if applicable), the lot and expiration date (if applicable), and the patient's response to the medication.
Compare and contrast the three types of RNA's discussed during protein synthesis
Answer: tRNA- bring amino acids during translation
rRNa-make up the enzymatic components of ribosomes
mRNA- (messenger RNA) is read by the ribsome during protein synthesis
Explanation:
They are similar in the ways that they are all made from RNA (lol)