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Ket [755]
3 years ago
15

How do identical twin forms

Biology
2 answers:
MrMuchimi3 years ago
7 0

Answer:

B

Explanation:

gregori [183]3 years ago
3 0
I believe that the answer is B. a fertilized egg splits in two but I could be wrong
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Nimfa-mama [501]
D bc the the cells more so breaks down the chemical energy and forms that chemical energy into putting it in different activities or chemical/hormonal needs
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Which of the following pieces of information would serve as evidence that DNA is the source of heritable information?
chubhunter [2.5K]
The Hershey and Chase experiment concluded the same by labeling the DNA of the parents with phosphorous and found out that the DNA of the offspring also bear phospho- labeled DNA, which established the fact that DNA is the heritable information source. So, your answer is B. 
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3 years ago
During which phase of mitosis do the chromosomes become distinctly visible in the microscope?
mylen [45]

Prophase of mitosis do the chromosomes become distinctly visible in the microscope.

During metaphase, the nucleus dissolves and the cell's chromosomes condense and move together, aligning in the center of the dividing cell. At this stage, the chromosomes are distinguishable when viewed through a microscope. The first stage of mitosis and of meiosis I and II.

During prophase the chromosomes become visible as distinct structures, the nuclear envelope breaks down, and a spindle forms (Meiotic prophase I is more complex, and includes synapsis of homologous chromosomes and crossing over). During Prophase chromosomes become Clearly visible, nuclear envelope disappears, kinetochores and spindle fibers form.

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6 0
1 year ago
The majority of time during a cells life is spent in _____
stealth61 [152]
Your answer is A interphase.

5 0
3 years ago
Read 2 more answers
which example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation?
KATRIN_1 [288]

An example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation is option B: replacement of a polar amino acid with another polar amino acid at the protein's surface.

A frequent and well-known example of a missense mutation is the blood condition sickle-cell anemia. Missense mutations exist in the DNA at a single location in sickle-cell anemia patients. A different amino acid is required in this missense mutation, which also alters the overall structure of the protein. Similarly, replacement of a polar amino acid by another polar Ami no acid at the protein's surface is a missense mutation causing change in a single site.

A neutral mutation is one whose fixation is unrelated to natural selection. Therefore, the independence of a mutation's fixation from natural selection can be used to define the selective neutrality of a mutation.

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Complete question is:

Which example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation?

a) Replacement of a polar amino acid with a nonpolar amino acid at the protein's outer surface

b) Replacement of a polar amino acid with another polar amino acid at the protein's surface

c) Replacement of a polar amino acid with another polar amino acid in the protein's interior

d) Replacement of a polar amino acid with a nonpolar amino acid in the protein's interior

3 0
1 year ago
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