Answer:
I think the answer is D because mens testosterone levels are high until the age of 40, then the lower.
Explanation:
The answer to the given question above would be FOUR. The number of copies of a DNA molecule that results from two replications of a single DNA molecule is FOUR. Since there are two replications, this makes the DNA molecule four. Hope this answers your question.
Kinda weird. But I have no feelings over it :)
Natural Selection could produce new variations of body parts.
Answer: A gene that exhibits multiple phenotypic expression.