alleryPleiotropy refers to:
ALinked genes
BNo trait
CMany genes for one trait
DOne gene affecting multiple phenotypic traits
Answer & Solution
Correct answer: D. One gene affecting multiple phenotypic traits
**Pleiotropy:** single gene affects multiple unrelated traits.
**Examples:** PKU (phenylketonuria) — gene defect causes intellectual disability, light skin, eczema.
Sickle cell HbS affects RBC shape, anemia, malaria resistance, organ damage.
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