Why are males more susceptible to X-linked disorders?
A. Males have an XX pairing of chromosomes, which this increases their odds of a disorder.
B. Males have an XY pairing of chromosomes and the Y chromosome is more likely to host a genetic disorder.
C. Most genetic disorders are connected to the dominant gene, and since men have an XY pairing, a disorder is more likely to be expressed.
D. Males have one X chromosome. If a male receives an X chromosome with a recessive gene for a disorder, he does not have another X chromosome that may contain a dominant gene to block that gene's expression.
Answer: D
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