Which of the following is the most common mechanism of genetic variation in the population of a sexually-reproducing organism?

Genetic drift

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Recombination

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Transduction

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Chromonsomal aberrations

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Solution

The correct option is B Recombination
Homologous recombination is a significant source of variability.
During meiosis in sexual organisms, two homologous chromosomes cross over and exchange genetic material.
It is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles.
This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.

So, the correct answer is option B.

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Similar questions

Assertion (A): Differences in a population are created by genetic variations.

Reason (R): Driving factor for variation is the source of sexual reproduction and also asexual reproduction.

If trait A exists in 10% of the population of an asexually reproducing species and trait B exists in 60% of the same population, which trait is likely to arise earlier.?

Q. Sexually reproducing organisms produce offspring with a marked, significant, and visible variation. Asexually reproducing offspring show minor variations.
i) Do you agree with the above statements?
ii) Among the following organisms point out the asexually reproducing organism (cockroach, Euglena, earthworm, and bird).

Question 1
If a trait A exists in $10 %$ of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?

Q. Which of the following statements concerning genetic variation is most accurate?

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