LIFE SCIENCE

Detailed explanation-1: -Spontaneous mutations are “the net result of all that can go wrong with DNA during the life cycle of an organism” (Glickman et al., 1986). Thus, the types and amounts of spontaneous mutations produced are the resultant of all the cellular processes that are mutagenic and those that are antimutagenic.

Detailed explanation-2: -The same is true of so-called spontaneous mutations. “Spontaneous” refers to the fact that the changes occur in the absence of chemical, radiation, or other environmental damage. Rather, they are usually caused by normal chemical reactions that go on in cells, such as hydrolysis.

Detailed explanation-3: -A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.