The primary root of a seedling grows down
a. to avoid light.
b. in response to gravity.
c. because the cells on the upper surface of the root
elongate more rapidly than those on the lower
surface of the root.
d. in response to different concentrations of auxin.
e. because of all of these except “to avoid light.”
Answer: e
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If an XY human had a genetic disorder that causes insensitivity to androgens, that person's genotype and phenotype would be
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