From the following, identify the correct combination of salient features of genetic code

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degenerate, non-overlapping, non-ambiguous

universal, ambiguous, degenerate

universal, non-ambiguous, overlapping

degenerate, overlapping, commaless

answer is D.

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Detailed Solution

Genetic code is degenerate, non-overlapping and non-ambiguous.
Some amino acids are coded by more than one codon. Hence, the code is degenerate. One codon codes for only one amino acid, hence, it is non-ambiguous.
The codon is read in mRNA in a contiguous fashion. There are no punctuations. The genetic code is non-overlapping, i.e., no single base can take part in the formation of more than one codon.
The codon is non-ambiguous, meaning that one codon can code for only one amino acid.

(1) ‘Genetic code is universal, non-ambiguous, overlapping’ is incorrect because though genetic code is
Universal and non-ambiguous, it is always non-overlapping.
(2) ‘Genetic code is degenerate, overlapping, comma less’ is incorrect because though genetic code is
Comma less and degenerate, it is always non-overlapping.
(3) ‘Genetic code is universal, ambiguous, degenerate’ is incorrect because though genetic code is universal and degenerate, it is non-ambiguous.

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