Question

What would be the length of a polypeptide translated from mrna which is encoded by 2988 bp of a bacterial gene?

Answer 1

996a.a

because, 3b.p => 1 a.a

                2988b.p => 2988/3 a.a.

hence, the polypeptide or protein formed is made of 996 amino acids.

Answer 2

Answer:

The correct option is '995'.

Explanation:

Each base pair codes for a nucleotide of mRNA hence mRNA from this bacterial gene will consist of 2988 nucleotides. As three-nucleotide sequence ( triplet codon ) codes for an amino acid in a polypeptide, polypeptide translated from this gene should have 2988/3 = 996 amino acids. Though, last codon (stop codon ) do not code for any amino acid hence the actual number of amino acids are 995.