In one population of lizards (Population A), the smallest lizards are more apt t

Question

In one population of lizards (Population A), the smallest lizards are more apt to survive because it is easier for them to hide from predators. In another population of lizards (Population B), the smallest lizards and the largest lizards are the most likely to survive. The smallest lizards need the least amount of food; the largest lizards can capture the most food. Which type of selection is occurring in Population A and Population B? Please explain your choice.

1. Population A = disruptive selection; Population B = directional selection

2. Population A = directional selection; Population B = directional selection

3. Population A = disruptive selection; Population B = disruptive selection

4. Population A = directional selection; Population B = disruptive selection

Explanation / Answer

Answer:

4. Population A = directional selection; Population B = disruptive selection

Explanation:

In directional selection, extreme phenotypes will be favoured over other phenotypes whereas natural selection can select for two or more distinct phenotypes that each have their advantages in disruptive selection

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