Cells differentiate during development because:
A) each cell contains only a portion of the genes.
B) genes respond only to influences outside the mother's body.
C) in each cell some genes are expressed and others are suppressed.
D) chemicals in the sperm cytoplasm determine which cells develop.
Correct Answer:
Verified
Q26: The structure produced by cleavage of a
Q27: The birth defect spina bifida results in
Q28: A human embryo is known as a
Q29: In humans, implantation occurs:
A)just prior to fertilization.
B)immediately
Q30: At what stage does a human embryo
Q32: The umbilical cord of a mammal connects
Q33: What makes the cells of a developing
Q34: At which stage is the human embryo
Q35: After induction occurs:
A)cells have different genes.
B)the fate
Q36: The dorsal lip of the blastopore:
A)becomes the
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