Biology 11th Edition by Gerald Audesirk,Teresa Audesirk,Bruce Byers

تمرين 3

In an alternate universe, although proteins are still constructed of combinations of 20 different amino acids, DNA is constructed of six different nucleotides, not four as on Earth. Would you expect organisms in this universe to have more precise genetic instructions or more different genes than life on Earth? Would you expect the length of a typical gene to be the same, shorter, or longer than that of a typical gene on Earth?