Which animal is likely to have the lowest expression level of a Pax6-like gene?
A)A surface-dwelling population of Astyanax mexicanus fish
B)A cave-dwelling population of Astyanax mexicanus fish
C)A fruit fly, Drosophila melanogaster
D)A ribbonworm (Lineus sanguineus) developing normally

Question

Quizplus · Accepted Answer

Cave-dwelling populations of Astyanax mexicanus, also known as blind cavefish, often have reduced or absent eyes and show lower expression levels of eye development genes like Pax6 compared to their surface-dwelling counterparts.

Which Animal Is Likely to Have the Lowest Expression Level