Question

7.
Write a brief note on chromosomal
mutations and gene mutations,​

Answer 1

Answer:

Gene mutations and chromosome mutations are two types of mutations that occur in the genome of an organism. A mutation is a permanent alteration of the nucleotide sequence of a gene. Gene mutations and chromosomal mutations mainly differ in the magnitude of the alteration. The main difference between gene mutation and chromosomal mutation is that gene mutation is an alteration of the nucleotide sequence of a gene whereas chromosomal mutation is an alteration of the structure or number of chromosomes. Mutations are caused by errors in DNA replication, homologous chromosome segregation or mutagens such as UV and chemicals. They alter the production of functional proteins. The influence of chromosomal mutations is higher than that of gene mutations since the magnitude of mutation in chromosomal mutations is high.