Question

What change is observed in a distribution curve for a trait affected by directional selection? A- It shifts to the right and to the left. B- It shifts to the left. C- it shifts to the right. D- It shifts either to the right or to the left.​

Answer 1

Answer: C- it shifts to the right.

Step-by-step explanation:

Directional selection occurs when individuals with a certain trait are favored over others, leading to a shift in the distribution of the trait towards one direction. Specifically, the curve shifts towards the side where the individuals with the favored trait are located, which in this case is towards the right. This means that over time, more individuals in the population will have the favored trait, and the mean value of the trait will increase.