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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
The factor that enriches the gene pool with new modified genes is:
  • A
    Mutation
  • B
    Somatic variation
  • C
    Decrease in chromosomes
  • D
    Increase in cytoplasm
✓

Answer

  1. Mutation

Explanation:

Mutation is a sudden heritable change. It is a permanent change in the nucleotide sequence. It causes a change in the gene pool which leads to genetic variation. It may cause due to chromosomal abbreviation during replication or under the influence of chemical radiation. The agents which cause mutations are known as mutagens.

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