Enlist any six characteristics of genetic code.

Answer: Characteristics of the genetic code:

1. Triplet code: three nucleotides (a codon) code for one amino acid.
2. Universal: the same codons specify the same amino acids in almost all organisms.
3. Non-overlapping: adjacent codons do not share bases.
4. Comma-less: there are no gaps or punctuation between codons; it is read continuously.
5. Degenerate: most amino acids are coded by more than one codon (61 sense codons for 20 amino acids).
6. Non-ambiguous: one codon specifies only one amino acid.
7. Start and stop codons: AUG (methionine) is the initiation codon; UAA, UAG and UGA are termination codons.
8. Polarity: it is read in the 5′ → 3′ direction.