Multiple choice

Which of the following statements about gene mutation is correct?

Mutation is the permanent change in the hereditary material, i.e., changes in the structure of chromosome or DNA. These changes in the DNA modify the sequence of amino acid in the protein of genes.

  1. It is the mutation from wild type to a new type.

  2. It is a change in the structure of gene.

  3. It is the mutation caused due to intracellular factors or due to background cosmic radiation.

  4. It is the mutations in germ cells or gametes or cells of germinal.

  5. It is the permanent change in the hereditary material.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gene mutations or point mutations are changes in the structure of gene. Since genes are DNA segments, the gene mutations include changes in the number or arrangement of nucleotides. These are also known as ‘intragenic mutations’. Gene mutations alter or modify the information conveyed by the gene. Lethal, albinos, chlorophyll deficiencies, sickle cell anaemia, etc., are caused by gene mutations.

Keep practicing — related questions