Answer:
The answer is The frist choice
Answer:
A. Advantageous alleles do not arise on demand.
Explanation:
According to theory of evolution, heritable traits in organisms can change across the generations leading to their evolution. There are many evolutionary forces like natural selection, mutation, genetic drift etc. However, it is incorrect to assume that the advantageous alleles will always be selected in evolution. Accumulation of random mutations, genetic drift or bottle neck effect are independent of this factor. Also, organisms with different degree of beneficial traits can coexist in same time frame. Just because humans evolved in a particular direction does not mean that other organisms will also do so.
Answer:
It is a laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size.
