Non-Mendelian Genetics

AP Biology· difficulty 2/5

A single gene affecting many phenotypic traits is an example of

A
$Polygenic inheritance$
B
$Incomplete penetrance$
C
$Codominance$
D
$Pleiotropy$
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Explanation

Pleiotropy: one gene \to many traits (e.g., sickle-cell allele affects red blood cells, pain, organ damage, immunity).

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