Question

which of these provides evidence from developmental biology of a shared evolutionary history?
a. the dna sequences of the cytochrome c genes in chimpanzees and spider monkeys are over 90% identical
b. both lobsters and frogs go through metamorphosis as a process in their life cycle.
c. both snakes and dogs have pelvic bones even though they are vestigial structures in the snake.
d. the skeletal structures of a leg of a horse and a flipper of a whale are very similar.

Explanation:

Developmental biology studies the processes by which organisms grow and develop. Metamorphosis is a key developmental process. Lobsters and frogs undergoing metamorphosis is a developmental - related trait that can indicate shared evolutionary history. DNA sequences (A) are more related to molecular biology. Similar skeletal structures (D) are related to comparative anatomy. Vestigial structures (C) are related to evolutionary remnants but not directly to developmental biology.

Answer:

B. Both lobsters and frogs go through metamorphosis as a process in their life cycle.