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B
only sex chromosomes
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C
autosomes and either X or Y–chromosome
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D
autosomes and X-chromosomes
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Solution
The correct option is D autosomes and X-chromosomes An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X and Y). Human female has 22 pairs of autosomes and one pair of X-chromosomes (22+XX).