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

question 18

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.

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