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Question
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
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Solution
the presence of a Y chromosome in a sperm
The sex of a child is determined by the Y chromosome that is present in a sperm.
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