If evolution has occurred:.
a) the allele frequencies in a population have changed.
b) the mean value for a trait has increased or decreased.
c) the individuals in a population have had differential reproductive success.
d) one species has split into two distinct species.
e) None of the above is correct.

What problem would a person most likely have if her kidney did not work correctly?

Which structure secretary’s hormones directly into the bloodstream without using a duct a) lacrimal gland b) adrenal gland c) oil gland d) salivary gland

Based on the body structures of these animals, which two conclusions are scientifically the skeletal structure of the gorilla and chimpanzee suggest a common evolutionary ancestry. the dog and frog share a closer evolutionary ancestry than the gorilla and chimpanzee. the dog is more closely related to the frog than it is to the chimpanzee. all four organisms share a common vertebrate ancestor.