Question

Nucleic acids offer variability because they contain alternate forms of genes called ______.

Answer 1

nucleic acids offer variability because they contain alternate forms of genes called alleles.

Answer 2

The correct answer would be alleles.

Alleles refer to the alternative form of the same gene.

They contain information about the same character, however, they can code for different traits associated with the same character.

For example, T and t are the alleles of the same gene which codes for the height character of a plant. T codes for the trait tallness whereas t codes for the trait dwarf.