Homeotic Genes Help Determine the Identity of Individual Segments in Drosophila

Multiple Choice

Homeotic genes help determine the identity of individual segments in Drosophila embryos by producing DNA-binding proteins that activate other genes. Each homeotic gene contains a consensus sequence called a homeobox, which encodes the DNA-binding domain.
-Mutations in homeotic genes often cause

A) the deletion of segments.
B) the absence of structures.
C) too many segments.
D) structures to appear in the wrong place.