Ans.
Biological classification of a species, there are eight levels from largest to smallest, which include domain, kingdom, phylum, class, order, family, genus, and species.
According to this classification system, modern humans can be classified as:
Domain (Eukarya), Kingdom (Animalia), Phylum (Chordata), Class (Mammalia), Order (Primates), Family (Hominidae), Genus (Homo), Species (sapiens).
Thus, levels of biological classification, represented by Mammalia and Hominidae are class and family, respectively.