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NEETZoologyPrinciples of Inheritance and Variation

Besides recombination, what is another phenomenon that leads to variation in DNA?

Options

  1. AGenetic drift
  2. BMutation
  3. CNatural selection
  4. DGene flow

Correct answer

B. Mutation

Step-by-step solution

Mutation is a phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism . In addition to recombination, mutation is another phenomenon that leads to variation in DNA. As you will learn in Chapter 5, one DNA helix runs continuously from one end to the other in each chromatid, in a highly supercoiled form. Therefore loss (deletions) or gain (insertion/duplication) of a segment of DNA, result in alteration in chromosomes. Since genes ar

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