Question

A mutation is most likely to have a selective advantage in evolution if

• A. It affects dominant genes.
• B. It affects recessive genes.
• C. It affects whole chromosomes.
• D. The environment remains stable.

Answer 1

Answer: (B)

It affects recessive genes.

Selective advantage means to enable an organism to survive and reproduce better than the other organisms. Several recessive mutations (mutation in recessive gene) have a very long history of survival as they are expressed only when both the copies have the mutations and tend to accumulate when they are enough to express.