The genetic code uses ________ nucleotide(s)to specify one amino acid.
A)one
B)two
C)three
D)four
E)64

Question

Quizplus · Accepted Answer

The genetic code is read in groups of three nucleotides called codons. Each codon specifies one amino acid. Since there are four different nucleotides (A, T, C, G) in DNA, there could be up to 64 (4 x 4 x 4) possible codons, but only 20 amino acids are used to build proteins. Therefore, multiple codons can code for the same amino acid, and this redundancy allows for some errors in DNA replication or transcription to be tolerable without affecting protein function.

The Genetic Code Uses ________ Nucleotide(s)to Specify One Amino Acid