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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Which of the following is associated with multiple phenotypes?
  • A
    Epistasis
  • B
    Pleiotropy
  • C
    Polygenic inheritance
  • D
    Mutation
✓

Answer

  1. Pleiotropy

Explanation:

Pleiotropy occurs when one gene influences multiple, seemingly unrelated phenotypic traits, an example being phenylketonuria, which is a human disease that affects multiple systems but is caused by one gene defect.

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