A(n) ______ is a portion of DNA that encodes a protein.

A segment of DNA that encodes a single polypeptide is a(n) .

A(n) enzyme is a type of protein that can cut double-stranded DNA at specific base sequences.

A three-nucleotide sequence in mRNA, that codes for a particular amino acid, is called a(n) .

DNA consists of coding sections (known as ________) and non-coding sections (known as _________).

A(n) Blank is a change in the nucleotide sequence of DNA.