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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 an example of intergenic gene interaction?
  • A
    Multiple alleles
  • B
    Co-dominance
  • C
    Incomplete dominance
  • D
    Polygenes
✓

Answer

  1. Polygenes

Explanation:

Multiple alleles, codominance, and incomplete dominance are examples of allelic interactions of the same gene. 

A polygenic trait is the one that is governed by more than one gene where dominant alleles of each gene express only a part of trait and the full trait is expressed only in presence of dominant alleles of all multiple genes. 

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