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It is well recognised that inbreeding raises homozygosity, which can result in the development of harmful recessive characteristics. Inbreeding can, however, occasionally be advantageous. Which of the following explanations of this contradictory scenario is most accurate?

Option: 1

Inbreeding can create new genetic variation by promoting the expression of previously hidden mutations.


Option: 2

 Inbreeding can create a pure-line population that is well adapted to a particular environment.


Option: 3

Inbreeding can increase the frequency of beneficial alleles and eliminate deleterious ones through selection.

 


Option: 4

Inbreeding can result in the accumulation of heterozygosity, which can lead to hybrid vigor.


Answers (1)

best_answer

The process of selection may be used to explain the contradictory scenario when inbreeding increases both undesirable and desirable features. While inbreeding might lead to an increase in homozygosity, it also makes it possible to recognise and choose people who possess desirable features. Beneficial alleles can be preferentially preserved and detrimental ones can be deleted by this selection process. Therefore, when selection is used, inbreeding may be advantageous because it might raise the frequency of advantageous alleles while reducing the frequency of harmful ones (option 3). Inbreeding has the potential to produce a pure-line population (option 2), but it does not result in the emergence of novel genetic diversity (option 1) or the buildup of heterozygosity (option 4).

Hence, option 3  is the correct answer.

Posted by

avinash.dongre

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