Answer:
A. 3 bases at a time in the same direction
Explanation:
The genetic code refers to the rules guiding the synthesis of a protein molecule from the information enclosed in a gene. It encompasses all the 64 possible codons in living organisms. During translation where each codon is read to synthesize an amino acid, the genetic code reads three bases at a time since there are three bases in one codon.
These three bases are read at the same time in the same direction i.e. 5′→3′ direction of the mRNA molecule. This direction is referred to as the reading frame.
