During pregnancy, maternal and fetal blood mix with each other.
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Q27: Which of the following serves as an
Q28: Which of the following structures provides nourishment
Q29: The presence of the same homeotic genes
Q30: In fetal circulation, which structure allows blood
Q31: Genes that determine how segments develop during
Q33: A homeotic gene codes for a(n) _
Q34: Which association is mismatched?
A) chorion-gas exchange
B) amnion-blood
Q35: The sac that surrounds the fetus and
Q36: In experiments with the roundworm Caenorhabditis elegans,
Q37: The sex of the fetus can be
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