AP Biologyeasymcq1 pt
Why are X-linked recessive traits more common in males?
A.Males carry only one X chromosome
B.Males have more mutations
C.The trait skips females entirely
D.Males lack the Y-linked compensation
Explanation
Core Concept
With a single X, one recessive allele is enough to express the trait; females need two copies (one per X), so carrier females are common but affected females rare.
Correct Answer
AMales carry only one X chromosome
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