Genetic testing has revealed that a male infant has been born with an extra X chromosome. What are the most likely implications of this finding? The child:
A) Is unlikely to survive infancy
B) Is likely to have no manifestations of this chromosomal abnormality
C) Will have significant neurological and cognitive defects
D) Will be unable to reproduce
Ans: B
Feedback:
An extra X chromosome is associated with Klinefelter syndrome, but a majority of XXY males do not exhibit visible effects of this chromosomal abnormality.
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