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Tick the incorrect option among the following? 

Option: 1

Genetic drift is an accidental evolutionary shift. 


Option: 2

It happens as a result of environmental factors.


Option: 3

The allele frequency of the genes is relatively unstable in large populations


Option: 4

Both (b) and (c)


Answers (1)

best_answer
  • Genetic drift is an accidental evolutionary shift in the allelic frequencies of a population. Although it only occurs in very small numbers, it has significant effects. 

  • It happens because the current generation's gene pool was used incorrectly when choosing the alleles for the following generation. It doesn't happen as a result of any environmental factors.

  • The allele frequency of the genes is relatively stable in large populations. because genes do not affect fitness and do not have a natural selection pressure against the alleles, the allele frequency of the genes is relatively stable in large populations.

  • Hence, option 4 is the correct answer.

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shivangi.shekhar

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