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Typical all mammals have seven cervical ...

Typical all mammals have seven cervical vertebrae except in

A

Elephant

B

Man

C

Kangaroo

D

Sea cow

Text Solution

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The correct Answer is:
D
Manatees are unusual amongst mammals in possessing just six cervical vertebrae which may be due to mutations in the homeotic genes. All other mammals have seven cervical vertebrae other than two toed and three toed sloths which have 8 cervical vertebrae.
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