As a future biologist, you are studying alien cells from the planet Pandora in the Alpha Centauri star system. You find that these cells contain RNA consisting of 10 different nucleotide bases, and proteins consisting of 76 different amino acids. You hypothesize that the smallest possible codons in the genetic code of these alien cells would contain how many nucleotide "letters" per codon?
a) 1 b) 2c) 3 d) 4 e) 5