After receiving a karyotype of a fetus, it is discovered that it has Klinefelter's syndrome. What does this designation indicate?
A. The fetus is female and the result of only one gamete possessing an X chromosome.
B. The fetus is male and the result of a Y-bearing sperm fertilizing an XX egg.
C. The fetus is an XY male.
D. The fetus is female and resulted from one of the gametes having an extra X chromosome.
Answer: B
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