Cells differentiate during development because
A) in each cell only some of the genes are expressed.
B) chemicals in the sperm cytoplasm determine which cells develop.
C) genes respond only to influences outside the motherʹs body.
D) each cell contains only a portion of the genes.
Correct Answer:
Verified
Q33: The structure produced by cleavage of a
Q34: In humans, implantation occurs
A) immediately after fertilization.
B)
Q35: A human embryo is known as a
Q36: Your biceps muscle is derived from the
A)
Q37: Based on experiments with amphibian embryos, Spemann
Q39: What makes the cells of a developing
Q40: The birth defect spina bifida results in
Q41: Stem cells developed by inserting genes that
Q42: In species with direct development, fewer offspring
Q43: Prior to birth, stretching of the cervix
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