A segment of DNA that specifies a sequence of amino acids in a polypeptide is called a(n)____________.
A) codon
B) intron
C) messenger
D) gene
E) enzyme

Question

A segment of DNA that specifies a sequence of amino acids in a polypeptide is called a(n)____________.  
A) codon
B) intron
C) messenger
D) gene
E) enzyme

Quizplus · Accepted Answer

A gene is a segment of DNA that contains the instructions for making a particular protein, including the sequence of amino acids in the protein. Codons are the specific three-letter sequences of nucleotides that code for individual amino acids within a gene. Introns are non-coding segments of DNA within a gene that must be removed before the protein is made. Messenger RNA (mRNA) is the intermediate molecule that carries the genetic information from DNA to the ribosomes, where the protein is synthesized. Enzymes are proteins that catalyze biochemical reactions in the body.

A Segment of DNA That Specifies a Sequence of Amino