Sort the following primary axes in the order that they are established during the development of Xenopus laevis. Your answer would be a three-letter string composed of letters A to C only, e.g. ACB.
(A) A-P
(B) D-V
(C) A-V

Question

Sort the following primary axes in the order that they are established during the development of Xenopus laevis. Your answer would be a three-letter string composed of letters A to C only, e.g. ACB.
(A)	A-P
(B)	D-V
(C)	A-V

Quizplus · Accepted Answer

The animal-vegetal (A-V) asymmetry is established before fertilization. The point of sperm entry then helps determine the dorsoventral (D-V) axis. The anteroposterior (A-P) axis is established later.

Sort the Following Primary Axes in the Order That They