Question

question 29
the order of the bases in dna determines the order of the
bases in mrna.
nucleotides in a protein.
amino acids in dna.
amino acids in mrna.

Explanation:

To solve this, we analyze each option:

• Option 1: During transcription, DNA's base sequence is used to synthesize mRNA, with complementary base pairing (A - U, T - A, C - G, G - C). So DNA base order determines mRNA base order.
• Option 2: Proteins are made of amino acids, not nucleotides. Nucleotides are in nucleic acids (DNA, RNA). So this is incorrect.
• Option 3: DNA is made of nucleotides, not amino acids (amino acids are for proteins). So this is incorrect.
• Option 4: mRNA is made of nucleotides, not amino acids. Amino acids are in proteins. So this is incorrect.

Answer:

A. bases in mRNA.