Cortical rotation following fertilization in X. laevis places the …(1) pole at the point of sperm entry, while Wnt11 mRNA is transported to the …(2) pole.
A) 1: anterior; 2: posterior
B) 1: posterior; 2: anterior
C) 1: animal; 2: vegetal
D) 1: dorsal; 2: ventral
E) 1: ventral; 2: dorsal

Question

Quizplus · Accepted Answer

Fertilization in Xenopus laevis, through a reorganization of the microtubule cytoskeleton, triggers a rotation of the egg cortex. This places the ventral pole at the point of sperm entry. The reorganization also leads to the transport of several cytoplasmic components, including the Wnt 11 mRNA, which becomes concentrated at the dorsal side.

Cortical Rotation Following Fertilization in X