Question

What is a point mutation?

A. The movement of a gene from one location to another in the chromosome
B. A single base pair change
C. Deletion of a gene
D. Rearrangement of the gene order within a chromosome
E. Movement of a gene between different species

Answer 1

A) A single base pair change.

Step-by-step explanation:

Point mutation is a change in a single base pair of a nucleotide. This comes as a results of mistakes made during DNA replication, induced by ultravoilet radiations, extreme heat and X-rays. There are three types of point or substitution mutations; change, deletion and insertion. The nucleotide bases are either mistakenly inserted, changed or deleted, thus changing the resulting protein or amino acid being coded for.