Final answer:
Chimpanzees are the species most closely related to humans, with whom we share homologous structures and a high level of DNA similarity, reflecting our shared ancestry and showing complex social behaviors and tool usage.
Step-by-step explanation:
The Closest Related Species to Humans
Within the taxonomy mentioned in the question, the species that are closest related to humans are chimpanzees. These primates belong to the suborder Haplorrhini, infraorder Anthropoids, parvorder Catarrhini, superfamily Hominoidea, family Hominidae, subfamily Homininae, and the tribe Panini. Chimpanzees are highly intelligent, have close social bonds, and are known to use tools. They fall under the hominid category which represents all modern and extinct great apes, including humans, gorillas, chimpanzees, and orangutans, and their ancestors. The hominin group includes modern humans, extinct human species, and all of our immediate ancestors.
As members of the Hominidae family, chimpanzees share several characteristics with humans, such as homologous structures that suggest a common ancestor and a capacity for complex social interactions and communities known as interspecific variation. These primates are considered to be the closest relatives of humans, sharing a large percentage of our DNA and showcasing behaviors that reflect our own, such as tool use and the establishment of complex social structures.