Answer:
20,000 genes...
Explanation:
<h3><em>Human genes vary in size from a few hundred bases to over a million bases..So every human has 20,000 genes and 3,000,000,000 bases.Your entire sequence of genes and bases is called
genome..</em></h3>
They are different ranks in a taxonomy hierarchy. The genus is more exclusive than the phylum.
Order:
Domain,
Kingdom,
Phylum,
Class,
Order,
Family,
Genus,
Species