In the developing Drosophila embryo,the Hox genes are expressed:
A)in temporally restricted domains.
B)uniformly throughout the embryo.
C)only in homeotic mutants.
D)in spatially restricted domains.
E)None of the answer options are correct.

Question

Quizplus · Accepted Answer

The Hox genes are expressed in spatially restricted domains along the anterior-posterior axis of the developing Drosophila embryo. This expression pattern helps to establish the distinctive identity of different body segments. The temporal regulation of Hox gene expression is also important, as the order in which Hox genes are activated during development determines the identity of different segments. Therefore, choice D, "in spatially restricted domains," is the best choice.

In the Developing Drosophila Embryo,the Hox Genes Are Expressed