How Many Reading Frames are Encoded by the Sense Nucleotide

Question

How many reading frames are encoded by the sense nucleotide strand?
A)One
B)Two
C)Three
D)Six
E)Ten

Accepted Answer

The sense nucleotide strand (also known as the coding strand) runs 5' to 3' and contains the same sequence as the RNA transcript (except for T instead of U). There are three possible reading frames in this strand as each codon consists of three nucleotides. However, only one reading frame will produce a functional protein as it corresponds to the correct sequence of amino acids.