In Snake Populations,rare Individuals Are Found That Have Well-Developed Hind

Multiple Choice

In snake populations,rare individuals are found that have well-developed hind limbs,but are normal in all other respects.These unusual snakes suggest that _____.

A) some snakes have mutations in Hox genes that permit development of limbs
B) snakes retain the genes for hindlimb pattern formation,even though the genes are usually not activated during development
C) mutations in genes that repress expression of hindlimb organizer genes can cause a snake to have limbs
D) All of the above might explain this rare condition.