Genetic code MCQ — 1 Practice Questions with Answers

Genetic code is a Science & Technology topic in the RAS/RPSC syllabus. This page gathers exam-style Genetic code multiple-choice questions with correct answers and explanations, so aspirants can test recall and revise frequently examined concepts.

Practice 1 Genetic code multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

1 Questions Science & Technology

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Q1. Select the incorrect statement about the genetic code.

A The codon is triplet.

B 61 codons code for amino acids.

C UUU codes for phenylalanine.

D AUG only acts as an initiator codon and has no other function. Correct

Explanation

The genetic code is read in triplets, so the statement that a codon is triplet is correct. Out of 64 codons, 61 specify amino acids and 3 act as stop codons, so that statement is also correct. UUU codes for phenylalanine, making that statement correct as well. AUG is the initiator codon, but it also codes for methionine. Therefore, saying that AUG has no other function is incorrect, which is why that statement is the required answer.

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Genetic code falls under the Science & Technology section of the RAS/RPSC syllabus. It is a frequently tested area and regular practice with these MCQs will strengthen your preparation.

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