Not exact matches
A genome consists of only four different
nucleotide bases, or DNA subunits, arranged in a
particular sequence.
The blade, he found, is an enzyme that always cuts the viral DNA code where it finds a
particular short
sequence of
nucleotides.
Comparisons between the
nucleotide makeup, or
sequence, of
particular genes allows scientists to see how closely they are related, and thus, group the organisms accordingly.