Target Exam

CUET

Subject

Biology

Chapter

Molecular Basis of Inheritance

Question:

Observe the table and answer the given question:

Identify the amino acids with one codon each?

Options:

Phenylalanine and Tryptophan

Phenylalanine and Methionine

Methionine and Glycine

Methionine and Tryptophan

Correct Answer:

Methionine and Tryptophan

Explanation:

The correct answer is Option (4) → Methionine and Tryptophan

The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins by living cells. It determines how sequences of nucleotide bases (adenine [A], cytosine [C], guanine [G], and thymine [T] in DNA or uracil [U] in RNA) correspond to amino acids, the building blocks of proteins.

Amino acids like tryptophan and methionine are coded by only one codon.
UGG codes for tryptophan.
AUG codes for methionine.