Question

the region which represents the three base sequence on trna and codes for an amino acid is ______.

a anticodon

b codon

c polypeptide

d all of the above

Explanation:

To solve this, we analyze each option:

• Option a (Anticodon): The anticodon is a three - base sequence on tRNA that is complementary to the codon on mRNA. It is responsible for bringing the correct amino acid as it pairs with the mRNA codon, and this pairing is related to coding for an amino acid.
• Option b (Codon): A codon is a three - base sequence on mRNA, not tRNA, so this option is incorrect.
• Option c (Polypeptide): A polypeptide is a chain of amino acids, not a three - base sequence on tRNA, so this option is incorrect.
• Option d (All of the above): Since options b and c are incorrect, this option is also incorrect.

Answer:

a. Anticodon