LIFE SCIENCE

Detailed explanation-1: -Within a population, each individual mutation is extremely rare when it first occurs; often there is just one copy of it in the gene pool of an entire species. But huge numbers of mutations may occur every generation in the species as a whole.

Detailed explanation-2: -These hereditary (or inherited) mutations are in almost every cell of the person’s body throughout their life.

Detailed explanation-3: -B. Silent mutations are a result of the redundancy (degeneracy) of the genetic code: This is false, as silent mutations are the result of a base substitution that has no discernible effect on the amino acid sequence of a protein.