A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from the air-breathing organ (a simple lung) of an ancestral fish is an example of
b. changes in Hox gene expression.
d. adaptive radiation.
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?
Master Descent With Modification with a bite sized video explanation from Jason Amores Sumpter