Mammary glands in whales and humans
A) are a synapomorphy for these species and other mammals.
B) are homologous traits.
C) were likely present in the most recent common ancestor of humans and whales.
D) All the given choices are correct.
E) None of the given choices are correct.

Question

Quizplus · Accepted Answer

Mammary glands in whales and humans are a synapomorphy (a shared derived trait) for these species and other mammals, indicating that they are homologous traits. This suggests that mammary glands were likely present in the most recent common ancestor of humans and whales, making all the given choices correct.

Mammary Glands in Whales and Humans