Home › UP Board Class 12 › biology › Molecular Basis of Inheritance › The total number of possible codons in the genet…
The total number of possible codons in the genetic code is
A16
B64
C20
D256
Answer & Solution
Correct answer: B. 64
A codon is a triplet of RNA bases; each base has 4 possibilities, so the total is 4³ = 64 codons. These 64 codons map to 20 amino acids (degenerate code) plus three stop signals.
Related questions
In eukaryotes, primary mRNA transcript becomes mature mRNA afterThe 'one gene - one polypeptide' concept was proposed byIn prokaryotes, the small ribosomal subunit recognises the mRNA initiation site via theIn humans, the percentage of A in a DNA sample is 30 %. By Chargaff's rule, the percentageTranscription differs from replication in that itThe genetic code is described as degenerate becauseOkazaki fragments are formed on theDuring DNA replication, the enzyme that unwinds the double helix is