Pleiotropy 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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