Question

there are 64 codons and 20 amino acids. which of the following is true.
A: several different codons can specify the same amino acid.
B: each codon specifies a different amino acid
C: some amino acids have no link to a codon
D: each amino acid is specified by only one codon

Answer 1

Answer:

I did the small quiz and the right answer is Several different codons can specify the same amino acid.

Explanation:

Answer 2

There are 64 codons and 20 amino acids simply because several different codons can specify the same amino acid.

There are more genetic codes/codons than amino acids in nature. Hence, 2 or more codons can code for the same amino acid. for example, GCC, GCT, GCA, and GCG all specify for the amino acid alanine.

This is why the genetic codes are said to be degenerates. Usually, the first two nucleotide bases in a genetic code are the most important. The last one could be any of the bases and the amino acid would remain the same.

More on the degenerates of the genetic codes can be found here:  https://brainly.com/question/7268897