In Mammals, Hox Genes

Multiple Choice

In mammals, Hox genes:

A) specify limbs and other structures associated with each body segment.
B) direct development of structures that become parts of the hindbrain, spinal cord, and vertebral column.
C) evolved by partial-genome duplication from the ancestral genes.
D) are expressed in a sequence that does not reflect their linear order in the chromosome or the regions they affect.
E) All of these choices are correct.