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In early embryonic development the cells start to differentiate based on.... a. hormones secreted by the uterus b. amniotic fluid produced by the placenta c. their location, or layer d. chemicals secreted
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In early embryonic development the cells start to differentiate based on....

a. hormones secreted by the uterus
b. amniotic fluid produced by the placenta
c. their location, or layer
d. chemicals secreted by the blastocyst

User Eux
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4 votes

Answer: A

Step-by-step explanation:

User Jerry Hicks
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