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NEET 2003 Biology question

BiologyMolecular Basis of InheritanceNEET 2003

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA : -

Answer: (1)

Solution

UAU codes for tyrosine, but UAA is a stop (nonsense) codon. Mutating the 25th codon to UAA terminates translation at that position, so only the first 24 codons are translated and a truncated polypeptide of 24 amino acids is

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Question ID VK-089289