Question

what alternate form of genes do nucleic acids have that allows them to offer variability?
○ allele
○ codon
○ nucleotide
○ chromosome

Explanation:

To solve this, we analyze each option:

• Allele: Alternate forms of a gene (nucleic acids like DNA/RNA carry genes) that account for variation.
• Codon: A sequence of 3 nucleotides coding for an amino acid, not an alternate gene form.
• Nucleotide: The building block of nucleic acids, not an alternate gene form.
• Chromosome: A structure carrying genes, not an alternate gene form.

So the correct option is the one with "allele".

Answer:

A. allele