PATHOLOGY

Detailed explanation-1: -A mutation (Section 14.1) is a change in the nucleotide sequence of a short region of a genome (Figure 14.1A). Many mutations are point mutations that replace one nucleotide with another; others involve insertion or deletion of one or a few nucleotides.

Detailed explanation-2: -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.

Detailed explanation-3: -Genetic mutation is the basis of species diversity among beetles, or any other organism. Mutations are changes in the genetic sequence, and they are a main cause of diversity among organisms.

Detailed explanation-4: -Mutations. When there is a mistake in the copying of the genetic message that is permanent, a mutation has occurred.

Detailed explanation-5: -(myoo-TAY-shun) Any change in the DNA sequence of a cell. Mutations may be caused by mistakes during cell division, or they may be caused by exposure to DNA-damaging agents in the environment. Mutations can be harmful, beneficial, or have no effect.