In people-eaters, purple is dominant to white. A true-breeding white mutant is mated with a different true-breeding white mutant. All of the F1 are purple. When the purple F1 offspring mate with each other, their offspring occur in the ratio of 9 purple : 7 white. Which phenomenon explains the purple F1 offspring
Answer:
The correct answer is - Complementation.
Explanation:
In this pattern of inheritance, there are two same type mutants that are crossed that are true-breeding white with another true-breeding white mutant. Let these mutants are CCpp and the other be ccPP.
All the f1 offspring produced are found to be purple in color as offspring will be CcPp. The products of both gene C and P required for the purple pigment to be expressed these genes complement each other and the absence of any of gene results in lack of the dominant phenotype.
If an animal has 21 chromosomes before replication, how many do they have after?
Answer:
Animals usually have 22 pairs of homolog chromosomes (autosomes) and as sex chromosomes 2 x chromosomes (in female), or 1 x and 1 y chromosome (in males), thus in total 46 chromosomes per body cell (see human karyogram; 2n = 46) and 92 chromatids per cell after replication.
Explanation:
42
Which of the three fundamental tissues have a secondary cell well? (Parenchyma, collenchyma and sclerenchyma)
Question 11 of 20 What fact do scientists believe provides evidence for the Big Bang Theory? A. All stars feature nuclear fusion in their core. B. Most extra-solar planets are gas giants C. All comets follow elliptical orbits. D. All distant galaxies are moving away from us.
How much energy will the cheetah get if it eats the gazelle?
Answer:
alot
Explanation:
what are the limitations of cell theory
Answer:
The shortcomings or drawbacks of cell theory are: Viruses are considered as acellular entities or organisms that do not have cell machinery, yet they are taken into account as organisms in this cell theory. Matthias Schleiden and Theodor Schwann did not know the mechanism of the cell.
Explanation:
What is a basic function of a cell
Answer:
The answer is below
Explanation:
They provide structure and support, facilitate growth through mitosis, allow passive and active transport, produce energy, create metabolic reactions and aid in reproduction.
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Which best describes how biotechnology may affect energy consumption?
A.It may make us use our natural resource more quickly
B.It may help to increase our use of fossil fuels
C.it may help to increase the generation of alternative fuels
D.It may negatively impact our energy consumption,
Answer:
How many patients had allergies or ear infections, but not both?
24
27
36 answer
40
Explanation:
B
A set of 23 chromosomes in a human cell
contains 3.2 billion pairs of DNA bases in
sequence. On average, about how many pairs
of bases are in each chromosome?
Explanation:
The human genome contains approximately 3 billion of these base pairs, which reside in the 23 pairs of chromosomes within the nucleus of all our cells. Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins.The human genome contains approximately 3 billion of these base pairs, which reside in the 23 pairs of chromosomes within the nucleus of all our cells. Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins.
What is chromosome ?
A chromosome is a thread-like structure present in the nucleus of cells such as plant, animal and human cells and it is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.
It is composed of three components, DNA, proteins and RNA, amount of the DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and small amount of RNA from 1 to 10%.
Two types of protein present in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).
The histone protein is basic, whereas, the DNA is acidic, so it can be neutralized; DNA in chromosome is present in two forms such as Euchromatin and Heterochromatin.
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Question 2 of 10
Which of the following is a product of fossil fuel combustion that contributes
to the greenhouse effect?
A. N2
B. O,
C. CO2
D. H2O2
SUBMIT
what is xylem and phloem in science?
Answer:
The xylem is one of the two types of tissue transported from the vascular plants, the other being the phloem.
Answer:
Xylem and phloem Plants have tissues to transport water, nutrients and minerals. Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose and amino acids between the leaves and other parts of the plant. Xylem and phloem in the center of the plant root
Explanation:
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NEED HELP ASAP
Which of the following increase the speed of action potentials in the nervous system?
Answer:
Where are the answers to choose from?
In any case, the ranvier nodes and myelin increase the speed
Glycolysis yields Choose... molecules of ATP, while the electron transport chain yields Choose.. molecules of ATP due to the presence of oxygen.
Answer:
Glycolysis yields 2 molecules of ATP, while the electron transport chain yields 32 molecules of ATP due to the presence of oxygen.
Explanation:
Glycolysis yields 2 molecules of ATP, while the electron transport chain yields 32 molecules of ATP due to the presence of oxygen.
What is electron transport chain?An electron transport chain is a collection of protein complexes and other molecules that associate protons across a membrane with the transfer of electrons from electron donors to electron acceptors via redox processes. Both photosynthesis and cellular respiration take place in mitochondria.
An organic metabolite (an intermediary in metabolic reactions) reacts with the coenzyme NAD+ to begin the electron transport cycle (nicotinamide adenine dinucleotide). In this oxidation reaction, the organic metabolite loses two hydrogen atoms (or two hydrogen ions and two electrons).
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HELPPPPPPPPPPPPPPPPPPPP
Answer:
Grabbing a handful of mixed candy out of a bowl.
Explanation:
For all other options you are choosing specific items... such as a book from the library, or choosing items written on your grocery list, or choosing what to pack for lunch. Bycatch in fishing refers to catching extra fish, other than what you are selecting for. By grabbing a handful of mixed candy from a bowl you are not selecting for a specific 'fish'.
Evaluate the examples and select those that do not show artificial selection.
A. White rabbits have a low survival rate in nature, because it is easy for predators to spot them.
B. Penguins with higher body fat tend to survive nesting in the Antarctic winter, while leaner penguins often die.
C. A gene for disease resistance in fir trees is transferred to pine trees using modern DNA technology, allowing farmers to maximize pine tree growth.
D. Because big game hunters sought elephants for ivory, often poaching those with the biggest tusks, more African elephants today naturally lack tusks compared to the elephant populations 100 years ago.
E. In subsaharan Africa, genetically modified grass varieties that carry genes for disease and drought resistance are now available to farmers, providing more sustainable food sources for their livestock.
Which of the following is not a normal body response to heat?
Select one:
a. dilation of peripheral blood vessels
b. increased sweating
C. decreased rate of muscle activity
d. increased retention of blood in the core region
e. increased water loss
Answer:
c. decrease rate of muscle activity
HELP MEEE PLS
This type of soil is found in warm, humid climates.
pedocal
laterite
pedalfer
humus
Answer:
laterite
Explanation:
Laterite soil is found in warm, humid climates. So, the correct option is B.
What do you mean by Climate?Climate may be defined as the description of the long-term pattern of weather in a particular area.
Laterite soil is found in the soil layer which is rich in iron oxide and derived from a wide variety of rocks weathering under strongly oxidizing and leaching conditions.
Therefore, Laterite soil is found in warm, humid climates.
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Need an answer before 1:59 tonight. Therefore, they could have existed on earth and fueled chemical evolution. In your own words describe this concept.
1 pts
Which of the following are examples of discontinuous variation? (select all that apply)
Answer:
what answer choices are there?
Explanation:
person's blood group or the color of a species of bird is what i think
Answer:
Hindi KO alam putang ina
Given the following sequence of DNA, write the correct sequence of complementary DNA bases.
TACCGATAA
Given the following sequence of DNA, write the correct sequence of complementary mRNA.
ACCGTACTG
Given the following sequence of DNA write the correct sequence of amino acids.
ATAGGCGTA
Answer:
1. ATGGCTATT
2. UGGCAUGAC
3. mRNA: UAU-CCG-CAU, amino acids: tyrosine(tyr)-proline(pro)-histidine(his)
Explanation:
For DNA, the complementary bases are T=A and C=G. This means every time you see one of these letters, the corresponding letter goes with it. For mRNA, the bases are T=A, A=U, C=G. It is the same except now, there should be no "T" in the mRNA sequence. With amino acids, you would first code for the mRNA sequence, every three letters being the amino acid sequence. To find the amino acid, you would look at a codon chart unless your teacher wants you to memorize them. The first three letters of the amino acid are the abbreviation.
What is the important function of sweating
Answer:
Sweating helps cool down the body. Water is released through glands in the skin, evaporates off the skin and the body is cooled. During exercise, muscles heat up more, so more sweat is needed.
Explanation:
11. The following graph shows the results of an experiment done by four different
groups. Each group took a rubber band and recorded how far it stretched as
they added weights to it. What is the independent (test) variable in this
experiment?
Group 1
Group 2
Group 3 Group 4
stretch
weight
I
A) The distance the rubber band stretched
B) The number of weights added to the rubber band
C) The different types of rubber bands
D) The same type of rubber bands
Which of the following occurs first in meiosis?
1. Homologous chromosomes line up in the center of the cell.
2. Chromosomes line up in the middle of each cell.
3. Crossing over between segments of homologous chromosomes.
4. Chromosomes are pulled to opposite poles of the cell.
Answer:
Crossing over between segments of homologous chromosomes.
Explanation:
Crossing over happens during prophase I of meiosis I
What is a swell wave?
Answer:
Swell are waves (usually with smooth tops) that have moved beyond the area where they were generated. The distance between the crests, or tops, of the waves that make up swell is usually much greater than the distance between waves being actively generated by wind blowing over the water.
Explanation:
Each fragment generated during the cycle sequence reaction is labeled with:
A. All four colors of fluorescent dye throughout the length of the fragment
B. All four colors of fluorescent dyes at one end of the fragment
C. One color of fluorescent dye at one end of the fragment
D. One color of fluorescent dye throughout the length of the fragment
Answer:
C
Explanation:
In cycle sequencing technique, four distinctive fluorescently named dideoxyNTPs are utilized ( ddATP, ddGTP, ddCTP and ddTTP) notwithstanding ordinary dNTPs. each ddNTP marked with an alternate fluorescent color. Toward the finish of the experiment, the outcome yields various pieces of variable lengths each resulting in a solitary terminal fluorescent ddNTP towards the end.
* Apply Concepts A particular plants diploid number of chromosomes is 50. Describe the number of chromosomes in one of the plant's cells during its sporophyte phase and during its gametophyte phase,
Chromosomes have hereditary function that are capable of self-duplication and they have thread-like structures seen inside the nucleus of plant and animal. In plants, they go through a cycle called alteration of generation that has multicellular stages. One is sporophyte that is a diploid, and the other is gametophyte with a haploid.
Moreover, spores are produce through meiosis so it go through a process of chromosome reduction in order to create a haploid spores. While, gametes undergo mitosis and the structure is already a haploid, which means that the number of chromosomes will not change in order to produce haploid. In this case, the plant have both spores and gametes and the similarities is that, they are both singles celled and a haploid. Therefore, the number of the chromosome in the gametophyte generation is also 32.
g Classify the statements as describing deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). DNA RNA is a single molecule that can be over 10,000,000 nucleotides long is usually double stranded includes the base thymine can be translated into a protein is the genome for prokaryotic organisms is usually single stranded includes ribose sugar is a single molecule that can form a complex secondary structure
Answer:
DNA:
- is a single molecule that can be over 10,000,000 nucleotides long
- is usually double stranded
- includes the base thymine
- is the genome for prokaryotic organisms
RNA:
- can be translated into a protein
- is usually single stranded
- includes ribose sugar
- is a single molecule that can form a complex secondary structure
Explanation:
Deoxyribonucleic acid (DNA) is the hereditary genetic material of both prokaryotic and eukaryotic organisms, while RNA is the genetic material of many viruses. DNA is a double helix molecule composed of four types of nucleotides: a nitrogenous base (Adenine, Thymine, Cytosine and Guanine), a five-carbon sugar (i.e., deoxyribose), and a phosphate group. On the other hand, RNA is usually a single-stranded molecule whose nucleotides contain ribose sugars and Uracil bases replace Thymine bases. During translation, a type of RNA molecule referred to as messenger RNA (mRNA) is used as template to direct the synthesis of a polypeptide chain (protein). This RNA molecule can fold to form stable double-stranded RNA hairpins (i.e., secondary structures).
name and explain the emergent properties of water?
Fungi are all eukaryotes that are not animals, plants or protists.
TRUE
FALSE
Check it
Answer:
true
Explanation:
this is it I think.:)
What are sedimentary rocks ?? USE IN YOUR OWN WORDS.
40 POINTS DONT SKIP !
Answer:
Rock that has formed through the deposition and solidification of sediment
Explanation: