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

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Inheritance of the skin colour in man is an example of:
  • A
    Blending inheritance
  • B
    Pleiotropism
  • C
    Codominance
  • D
    Cumulative genes
✓

Answer

  1. Cumulative genes

Explanation:

Skin color in humans is controlled by 3 genes.Hence it is an example of quantitative inheritance also called polygenic inheritance in which a phenotypic trait is controlled by many genes.Such genes that control many traits are called polygenes or cumulative genes.

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