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OpenStudy (anonymous):
The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid. Which animal lacks an amnion?
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OpenStudy (anonymous):
Frog, Lizard, Pigeon
OpenStudy (anonymous):
those are the answers
thomaster (thomaster):
Frog lacks an amnion
thomaster (thomaster):
amnion is only developed in mammals and reptiles but not not amphibians
OpenStudy (anonymous):
tiger and the racoon
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thomaster (thomaster):
@blow-some-smoke-420 Don't post irrelevant answers please
OpenStudy (anonymous):
ohh sorry i thioght that was the answer
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