Overexpression of caudal in the early Drosophila embryo,at a level high enough to overcome inhibition by Bicoid protein,would
A)interfere with the development of anterior structures.
B)interfere with the development of posterior structures.
C)interfere with the development of both anterior and posterior structures.
D)have no effect since the cytoplasm has already been determined.

Question

Quizplus · Accepted Answer

Overexpression of caudal in the early Drosophila embryo would interfere with the development of anterior structures because caudal is a gene that promotes the development of posterior structures. High levels of caudal, overcoming Bicoid inhibition, would disrupt the normal anterior-posterior gradient, leading to improper development of anterior structures.

Overexpression of Caudal in the Early Drosophila Embryo,at a Level