Studies reconstructing the opsin gene of the common ancestor of birds, dinosaurs, and crocodiles showed that the
A) opsin was red shifted.
B) opsin was blue shifted.
C) common ancestor was likely nocturnal.
D) Both a and c
E) Both b and c

Question

Quizplus · Accepted Answer

The opsin gene being red shifted suggests adaptation to low-light conditions, supporting the idea that the common ancestor was likely nocturnal.

Studies Reconstructing the Opsin Gene of the Common Ancestor of Birds