SSC MTS EXAM

Detailed explanation-1: -Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.

Detailed explanation-2: -What Is The Molecular Basis Of Mutation? Mutations in the genes can be induced or could arise spontaneously. Induced mutations are generated when an entity is exposed to a mutagen or an agent causing mutations. These mutations usually tend to have higher frequencies than spontaneous mutations.

Detailed explanation-3: -Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique. They account for the variation we see in human hair color, skin color, height, shape, behavior, and susceptibility to disease.

Detailed explanation-4: -The theory states that evolution is a jerky process where new varieties and species are formed by mutations (discontinuous variations) that function as raw material of evolution. The salient features of mutation theory are: 1. Mutations or discontinuous variations are the raw material of evolution.