Question

Choose the incorrect statement from the following.

• A. AUG is the initiator codon and also codes for methionine.
• B. UGA is a terminator codon.
• C. A codon is not always a triplet.
• D. Genetic code is universal from protozoa to human.

Hint:

The Genetic Code is: Triplet, Universal, Non-overlapping, and Degenerate.

Answer 1

The Correct Option is C

Step 1: Concept
The genetic code consists of specific properties that dictate how mRNA sequences are translated into proteins.

Step 2: Analysis of Universal Rules
AUG is indeed the start codon for methionine, and UGA, UAA, and UAG are standard stop (terminator) codons.

Step 3: Identification of Error
A fundamental property of the genetic code is that a codon is always a triplet (composed of three nucleotides). Statement (C) contradicts this established rule.

Step 4: Conclusion
Statement (C) is the incorrect one. Final Answer: (C)