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Homo (from Latin homÅ 'human') is a genus of great ape (family Hominidae) that emerged from the genus Australopithecus and encompasses only a single extant species, Homo sapiens (modern humans), along with a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans; these include Homo erectus and Homo neanderthalensis.
Regardless of the timing of the isthmus closer, biologists can study the species on the Pacific and Caribbean sides in, what has been called, "one of the greatest natural experiments in evolution." [ 244 ] Studies of snapping shrimp in the genus Alpheus have provided direct evidence of allopatric speciation events, [ 246 ] and contributed to ...
Palorchestes, a genus of the extinct marsupial family Palorchestidae, which are closely related to wombats and koalas in the suborder Vombatiformes, was nicknamed the "marsupial tapir" due to the shape of the animal's nasal bones, which was presumed that they possessed a short proboscis, [63] like those of placental tapirs today.
The same holds true for other living things, like chimpanzees or cats. But what about egg-laying birds, like the chicken? As it turns out, about 60% of chicken genes have a human gene counterpart.
The evolution of biological complexity is one important outcome of the process of evolution. [1] Evolution has produced some remarkably complex organisms – although the actual level of complexity is very hard to define or measure accurately in biology, with properties such as gene content, the number of cell types or morphology all proposed as possible metrics.
For humans, we're 99.9 percent similar to the person sitting next to us. The rest of those genes tell us everything from our eye color to if we're predisposed to certain diseases.
Sumatran orangutan (Pongo abelli) Hominoidea is a superfamily of primates. Members of this superfamily are called hominoids or apes, and include gorillas, chimpanzees, orangutans, gibbons, bonobos, and humans. Hominoidea is one of the six major groups in the order Primates. The majority are found in forests in Southeastern Asia and Equatorial Africa, with the exception of humans, which have ...
The microscopic nematode Caenorhabditis elegans, for example, is composed of only a thousand cells but has about the same number of genes as a human. [ 1 ] [ 2 ] Researchers suggest resolution of the paradox may lie in mechanisms such as alternative splicing and complex gene regulation that make the genes of humans and other complex eukaryotes ...