Question

The graphs below illustrate change in a lizard population over time. Which process most likely led to the change in the lizard population?
A
natural selection acting on a harmful trait

B
natural selection acting on a beneficial trait

C
natural selection acting on a dominant trait

D
natural selection acting on a recessive trait

Answer 1

Answer: Option 'C' is correct.

Explanation:

Dominant traits are those traits which are visibly expressed in the organisms ( here, lizard)

Recessive traits are those traits in which genes are carried but it is not visible itself in the organisms.

Here, we can see that genes of Allele Z is carried by population of lizard in 50 years.

Here, it is natural selection acting on a dominant trait.

Hence, option 'C' is correct.

Answer 2

C. Z is capital, being a dominant gene. Dominant genes will begin to dominate the gene pool, hence the name given to them. I hope I helped, it’s been forever since I took bio!