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The origin of humans - Coursework Example

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It defines species based on interbreeding. In its definition, species refers to the population that has potential and natural interbreeding in disregard to similarity in…
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The origin of humans Insert Insert The biological species definition concept is one of the most acceptable species concepts aroundthe globe. It defines species based on interbreeding. In its definition, species refers to the population that has potential and natural interbreeding in disregard to similarity in appearance. This concept broadly explains the reasons for resemblance amongst the members of the same species hence formation of phonetic clusters to differ from others. In the event of breeding between two organisms, the genes are inherited by the offspring.

Repetition of breeding process shuffles the genes around the same gene pool to give the identity of the species. Contrary to the argument, genes are not transferable to other species hence different species poses different appearance. There is a great confusion since appearance can be helpful in species identification, hence disregarding the biological definition (Lewin, 2005). The evolution of man contrasts the biological definition of species in the aspect of appearance. The successful interbreeding of Homo sapiens and Homo neanderthalensis biologically denotes them to belong to the same species biologically (Lewin, 2005).

Neanderthals are closest relatives of Homo sapiens but belong to different species. Their evolutionary trace is in Asian and Europe while Homo sapiens fossils are in Africa. They concur in appearance but form different species hence more confusion when dating the human evolution. Strict biological definition concentrates on testing and stating theories for biodiversity measurement through taxonomy family levels. It has broad scale consideration but various implications. In consideration of species definition, it becomes difficult to assign the correct taxonomic rankings for the fossil study (Sober, 1994).

The challenge is that, most living species interbreeding documentation is imperative since past fossils can no longer mate although the need for dating human evolution and origin is still crucial.ReferencesLewin, R. (2005). Human evolution (1st ed.). Malden, MA: Blackwell.Sober, E. (1994). Conceptual issues in evolutionary biology (1st ed.). Cambridge, Mass.: MIT Press.

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