NEET 2019 Odisha · BiologyPrevious Year Question
From the following, identify the correct combination of salient features of Genetic Code
Answer: (D) Degenerate, Non-overlapping, Non-ambiguous. Answer: (D) Degenerate, Non-overlapping, Non-ambiguous.
- A.Universal, Non-ambiguous, Overlapping
- B.Degenerate, Overlapping, Commaless
- C.Universal, Ambiguous, Degenerate
- D.Degenerate, Non-overlapping, Non-ambiguous✓
Correct Answer
(D) Degenerate, Non-overlapping, Non-ambiguous
Solution & Explanation
Answer: (D) Degenerate, Non-overlapping, Non-ambiguous. The genetic code is degenerate (some amino acids are coded by more than one codon), non-overlapping/comma-less (read contiguously with no punctuation), non-ambiguous (one codon codes for only one amino acid), and nearly universal; it is NOT overlapping or ambiguous, which eliminates the other options. NCERT Ch 5, p.96, lines 014-017: "Some amino acids are coded by more than one codon, hence the code is degenerate. The codon is read in mRNA in a contiguous fashion. There are no punctuations."
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