The mutation has been the resultant of the change in DNA, chromosomes have been the DNA constituent. Thus option B is correct i.e. the change in genes of chromosomes results in mutation.
During the cell division, while copying the DNA there has been a mistake that results in mutation. Thus mutations have been arisen due to the defect in the DNA.
The mutations result in the change in the genotype of the organisms. The defects may be seen as phenotypic defects as well. The mutations can also result due to chemical or radiations exposure, or viruses, or other infections. The mutations are irreversible changes.
Since the mutation has been the resultant of the change in DNA, chromosomes have been the DNA constituent. Thus the change in genes of chromosomes results in mutation. Thus option B is correct.
For more information about the mutations, refer to the link:
https://brainly.com/question/4347425
