How many unique possible combinations of nucleotide bases are there to make the amino acids needed for protein synthesis? 24

64

60

20

I think this is 20 Brainliest?

Explanation:

Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases). The adaptor molecule for translation is tRNA