Question

the three-base sequence on mrna that matches the triplet of dna is a(n) ______ .
a triplet
b anticodon
c codon
d gene

Explanation:

To solve this, we analyze each option:

• Option A: A triplet is a three - base sequence in DNA, not mRNA, so A is incorrect.
• Option B: An anticodon is a three - base sequence on tRNA that is complementary to a codon on mRNA, not matching the DNA triplet on mRNA, so B is incorrect.
• Option C: A codon is a three - base sequence on mRNA that is complementary (matches) to the DNA triplet (since mRNA is transcribed from DNA), so C is correct.
• Option D: A gene is a segment of DNA that codes for a protein or functional RNA, not a three - base sequence on mRNA, so D is incorrect.

Answer:

C. codon