<span> the more closely </span>organisms are related, the more similar the DNA sequences are. It's also used to determine evolutionary (phylogenetic) relationships. For example, DNA analysis showed that hyenas, although they look like dogs, are more closely related to cats. so
<span>Messenger RNA (mRNA) is known
to be molecules that carries codes (DNA) in the nucleus to the cytoplasm the
sites of protein synthesis. Thus, it is the RNA copy from one section of the
DNA that usually correspond to a single
gene. </span>