Which headings best complete the chart , the chart is in the picture below.

The right answer is the third one

A point mutation is a change in the structure of the gene, affecting one to several nucleotides (between one and ten).

There are four types of point mutations:

* substitution: which is the replacement of one (or more) nucleotides.

* insertion : which is the addition of one or more nucleotides;

* deletion : which is the loss of one or more nucleotides.

* inversion: which is the permutation of 2 neighboring deoxyribonucleotides;

you're crazy : )