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.They are normal in all other respects.This finding shows 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) some snakes may lack the regulatory inhibitors necessary for normal limbless development.
D) all of the above might explain this rare condition.