Question

How many different amino acids are there, each coded for by a triplet of bases on DNA? The R-group is the region of variation between the amino acids and determines its properties.

A. 1 amino acid.
B. 3 amino acids.
C. 20 amino acids.
D. 64 amino acids.

Answer 1

The correct answer is D. 64 amino acids. In DNA, each amino acid is coded for by a triplet of bases known as a triplet code. There are a total of 64 different combinations of the four nucleotides (adenine, thymine, cytosine, and guanine) in groups of three.

Step-by-step explanation:

The correct answer is D. 64 amino acids.

In DNA, each amino acid is coded for by a triplet of bases known as a triplet code. There are a total of 64 different combinations of the four nucleotides (adenine, thymine, cytosine, and guanine) in groups of three.

These triplets are read by the cell during protein synthesis and determine the sequence of amino acids in a protein.