In early ancestors of the modern giraffe,longer necks allowed animals to reach higher tree branches as food.This would lead to ________ in the ancestral giraffe population.
A)directional selection
B)stabilizing selection
C)disruptive selection
D)sexual selection
E)genetic drift

Question

Quizplus · Accepted Answer

Longer necks provide a selective advantage as they allow for access to higher tree branches as a food source. Therefore, individuals with longer necks are more likely to survive to reproductive age and pass on their genes for longer necks to their offspring. This results in a directional shift towards longer necks in the population over time.

In Early Ancestors of the Modern Giraffe,longer Necks Allowed Animals