|
The Origin of HIV and the First Cases of AIDS (3707 words) |
 | This is an extension of the original 'hunter' theory. |
| Her team of researchers also discovered that the virus had originated in Guinea-Bissau and that its spread was most likely precipitated by the independence war that took place in the country between 1963 and 1974 (Guinea-Bissau is a former Portuguese colony). |
| Her theory was backed up by the fact that the first European cases of HIV-2 were discovered among Portuguese veterans of the war, many of whom had received blood transfusions or unsterile injections following injury, or had possibly frequented local prostitutes. |
| 29+ Evidences for Macroevolution: the Scientific Case for Common Descent (2151 words) |
| In evolutionary theory it thus entails common ancestry, descent with modification, speciation, the genealogical relatedness of all life, transformation of species, and large scale functional and structural changes of populations through time, all at or above the species level (Freeman and Herron 2004; Futuyma 1998; Ridley 1993). |
| Microevolutionary theories are gradualistic explanatory mechanisms that biologists use to account for the origin and evolution of macroevolutionary adaptations and variation. |
| In evolutionary theory it is taken as axiomatic that an original self-replicating life form existed in the distant past, regardless of its origin. |
Feeds |
Contact