What is true of Hox gene complexes in mammals?
A)They evolved convergently from similar genes in insects and flatworms.
B)They directly encode morphological proteins.
C)They are located on a single chromosome.
D)They determine cell fate along the anteroposterior axis.
E)They play a major role in embryonic,but not adult,body plans.

Question

Quizplus · Accepted Answer

Hox genes are responsible for determining cell fate along the anteroposterior (head-tail) axis during development in mammals.

Answer: C
 In mammals, Hox genes are located on four different chromosomes, not a single chromosome.

Answer: A
 Hox genes are not convergent in mammals, but rather evolved from a family of similar genes found across many animal groups.

Answer: E
 Hox genes play a major role in both embryonic and adult body plans.

What Is True of Hox Gene Complexes in Mammals