av Deenah mohamed 17 år siden
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Compare the DNA base sequence
Ex. : homologous structures
allowing only the plants and animals with desirable characteristics to reproduce
a change in the gene pool of a small population that takes place strictly by chance
any movement of genes from one population to another
a change in the DNA sequence
many species result of DIVERGENCE made possible by ISOLATION
Ex. Darwin's Finches
III. Variation, naturally occuring
II. Competition between & within species
I. CHANGES in the environment
survival or extinction is determined by that organism's ability to adapt to its environment