Q179 / 180 · AIIMS 2010 · Zoology

Assertion : Inbreeding produces pureline. Reason : It causes homozygosity.

  • Correct answer
    A
    If both assertion and reason are true and reason is the correct explanation of assertion
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion
  • C
    If assertion is true but reason is false
  • D
    If both assertion and reason are false.

Solution

Inbreeding refers to the mating of closely related individuals within the same breed for 46 generations. Superior males and superior females of the same breed are identified and mated in pairs. The progeny obtained from such matings are evaluated and superior males and females among them are identified for further mating. Inbreeding increases homozygosity. Thus inbreeding is necessary if we want to evolve a pureline in any animal.

Hence, the correct answer is option: 'A'.

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