a deena rifai 17 éve
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Még több ilyen
Evolutionary process by which new biological species arise.
The splitting of one species into two or more species.
The fact that organisms are always getting better and being more fit for their type of envirnment
Greater reproductive success among particular members of a species arising from genetically determined characteristics that confer an advantage in a particular envirnment.
Genetically determined differences in the of characteristics of members of the same species.
Any evidence of ancient life.
A permanent change in the genetic material, usually in a single gene.
In general, a group of organisms which can potentially breed with each other to produce fertile offspring and cannot breed into members of other groups.
Change in the hereditary characteristics of groups of organisms over the course of generations.