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Over [174]
3 years ago
5

Approximately 21% of the human genome is comprised of nucleotides containing C. Given this information, calculate the percentage

of the human genome that is comprised of nucleotides containing G, T, and A.
(a) _____% of the human genome is comprised of G.
(b) _____% of the human genome is comprised of T.
(c) _____% of the human genome is comprised of A.
Enter your answer as three numbers separated by commas (example: 12, 26, 32).
Biology
1 answer:
azamat3 years ago
8 0

Answer:

(a) 21% of the human genome is comprised of G.

(b) 29% of the human genome is comprised of T.

(c) 29% of the human genome is comprised of A.

Explanation:

According to Chargaff's rule, a DNA molecule has the same amount of pyrimidines (T and C) as purines (A and G), and G pairs with C and A pairs with T.

If 21% of the genome contains C, then 21% also contains G.

Therefore 21% + 21% = 42% of the genome is comprised of G+C.

The other 58% is comprised of A+T, and because they pair with each other, 29% will correspond to A and 29% will correspond to T,

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Explanation:

The allopatric speciation refers to the evolution in which the same specie starts developing different characteristics because of geographic barrers and this characteristics after some time generates two different specie.

It happens because usually according to the environment or the predators, species have to develop different adaptations so they can survive. In this case we have two different types of camouflage adaptations made by the salamanders acording to the conditions so for one specie it is better to camouflage from the predator mean while to the other is better to use lived colors to seem as it is a poisonous animal and in this way avoid the predators.

So you can see the same specie develop different strategies to survive because of a geographic separation, generating an allopatric speciation.

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