SSC MTS EXAM

Detailed explanation-1: -Variants can affect one or more DNA building blocks (nucleotides) in a gene. Gene variants can be inherited from a parent or occur during a person’s lifetime: Inherited (or hereditary) variants are passed from parent to child and are present throughout a person’s life in virtually every cell in the body.

Detailed explanation-2: -The genetic diversity has three different sources: mutation, recombination and immigration of genes.

Detailed explanation-3: -mutation. random mating between organisms. random fertilization. crossing over (or recombination) between chromatids of homologous chromosomes during meiosis. 08-Jun-2022