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| a theory that evolution of a species is due to a predetermined series of alterations intrinsic to the species, not due to natural selection |
| a taxonomic group of organisms classified together on the basis of homologous features traced to a common ancestor |
| an organism or cell capable of synthesizing all its metabolites from inorganic material, requiring no organic nutrients |
| a group of individuals or species having a common ancestry |
| the compact area of a nerve cell that constitutes the nucleus and surrounding cytoplasm, excluding the axons and dendrites |
| adapting to the prevailing conditions and producing offspring that survive to reproductive age; contributing to the gene pool of the next generation |