Which statement about sex chromosomes is correct?
a. The Y chromosome carries a greater number of genes for nonsexual traits than does the X.
b. X and Y are different in size but carry nearly equal numbers of genes.
c. The X chromosome carries more genes for nonsexual traits than does the Y.
d. The X chromosome carries only gender-related genes.
e. The X chromosome carries the SRY gene.
ANSWER: c
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