MCQ
Mutation is:
- AAn abrupt or discontinuous change which is inherited
- BA factor for plant growth
- CA change which affects parents only and is never inherited
- DA change which affects the offspring of F2 generation
Explanation:
Mutations are sudden, random changes in the structure of the gene that alter the gene product structurally as well as functionally; statement B is incorrect. They produce discrete/discontinuous variation which means that mutant allele expresses contrasting phenotype as compared to that of wild-type, for example, the mutation in allele for plant height produced altered allele, the wild type allele produces tall while the mutant produce dwarf plants. Statement A is correct. Since genes are the unit of heredity, mutations in genes are passed from one generation to next. Thus, parent transmits mutations to F1 which in turn pass it to F2 and so on; this makes statement C and D incorrect.
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