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Zoology Genetics - 1
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Which of the following are correct about sex-linked recessive inheritance?
P. Most affected individuals are males.
Q. Affected females come from affected fathers and affected or carrier mothers.
R. The sons of affected females should be affected.
S. The trait does not skip generations.
AnswerClick to flip back
A
P, Q and R
💡 Explanation:
In X-linked recessive inheritance, males are primarily affected because they have only one X chromosome. Affected females require an affected father and a carrier or affected mother to inherit two recessive alleles. Sons of affected females always receive the X chromosome with the recessive allele and will be affected. These traits can skip generations through carrier females, so S is false.