Question

if a dna coding sequence contains 12 nucleotides, how many mrna codons will there be?
3
4
6
5

Explanation:

Step1: Recall the relationship between nucleotides and codons

A codon is a sequence of 3 nucleotides.

Step2: Calculate the number of codons

If there are 12 nucleotides, then the number of codons is \( \frac{12}{3} \).

Answer:

4