The heart in a human embryo begins to beat around ___ after fertilization.
A) 5 days
B) 3 weeks
C) 7 weeks
D) 9 weeks
E) 12 weeks
Correct Answer:
Verified
Q61: In humans, the blastocyst develops about _
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Q110: Which of the following is NOT true
Q111: The embryo develops from cells of the
A)
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Q116: Which of the following is NOT true
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Q119: All organ systems in a human embryo
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