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Which one of the following triplet codes, is wrongly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop' codon?

1. UAC – Tyrosine
2. UCG – Start
3. UUU – Stop
4. UGU – Leucine

Correct answer: UCG – Start

Solution

UCG codes for serine, not a start codon. The start codon is typically AUG, while stop codons are UAA, UAG, and UGA.

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