Question Detail

BIO 101 BIO 101 Test Prep Objective Question

Question

What is a codon?
Options
A A sequence of three nucleotides in tRNA that codes for an amino acid
B A sequence of three nucleotides in mRNA that codes for an amino acid
Correct Answer
C A sequence of three nucleotides in DNA that codes for an amino acid
D A sequence of three nucleotides in rRNA that codes for an amino acid
Correct Answer

Option B is the correct answer.

Detailed Explanation

A codon is a sequence of three nucleotides in mRNA that codes for an amino acid.

Hint

The genetic code is read from mRNA during translation.

Question Info