Question

he most parsimonious explanation for the existence of beaks in birds is that

Select one:

a. Beaks arose multiple times in different bird lineages.

b. Beaks are independent derived characteristics.

c. Beaks were not advantageous in some environments.

d. Beaks are not a genetically determined trait.

e. Beaks arose once in a common ancestor of beaked groups.

Answer 1

The best answer is "e. Beaks arose once in a common ancestor of beaked groups." beaks are genetically determined trait which have evolved from a common ancestor. The individual species may have variation in the beaks based on the habitat.