If there are 64 potential codons that code for various amino acids but only about 20 specific amino acids, what must be true about the genetic code?
A. Most of the codons are not used.
B. There are two codons for each amino acid, and the rest are stop codons.
C. All are used, but bacteria and plants each have 20 different amino acids.
D. Multiple codons code for the same amino acid.
Answer:D
If there are 64 potential codons that code for various amino acids but only about 20 specific amino acids, what must be true about the genetic code?
A. Most of the codons are not used. B. There are two codons for each amino acid, and the rest are stop codons. C. All are used, but bacteria and plants each have 20 different amino acids. D. Multiple codons code for the same amino acid.