For humans, which parent’s gamete will determine the sex of the child?
a. The father, because his gametes only contain the Y chromosome.
b. The mother, because her gametes only contain the X chromosome.
c. The father, because his gametes can contain either the X or Y chromosome.
d. The mother, because her gametes can contain either the X or Y chromosome.
e. Either parent, because the random mixing of gametes determines the sex of the child.
ANSWER: c
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