Although birds and mammals descended from different ancestors, they both have a four-chambered heart. This is the result of
A) the simplification of the cardiovascular system.
B) the necessity for rapid movement of blood.
C) convergent evolution.
D) genetic aberrations that resulted from mistakes in somatic cell division.

Question

Quizplus · Accepted Answer

The fact that birds and mammals both have a four-chambered heart despite descending from different ancestors is due to convergent evolution. This means that they independently evolved this feature as an adaptation to their environment and lifestyle.

Although Birds and Mammals Descended from Different Ancestors, They Both