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How many codons code for an amino acid?

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in Biology – Class 12 by (271k points)
How many codons code for an amino acid?

(a) 3

(b) 8

(c) 90

(d) 61

The question was posed to me in a job interview.

Origin of the question is Molecular Basis of Inheritance in section Molecular Basis of Inheritance of Biology – Class 12

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Correct option is (d) 61

Explanation: There are a total of 64 codons. Among these 64 codons, 61 codons are responsible for coding the amino acids. The remaining 3 codons do not take part in producing the amino acids. On the other hand, they are responsible for stopping the production of amino acids. Hence, they are called as “Stop Codons”.

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