Zoo 317 Heredity, Evolution and Society

Lecture 35 Cummings 18: pp 424-428

I. Linnaean classification.

II. Natural selection.

III. Evolution.


I. All forms of life, present and past, are related in a hierarchical manner.

II. The hierarchical relationships exist because all forms of life arose from a single primordial life form, diversifying and adapting to produce the millions of species that have existed or that do exist.

III. Evolution can be defined as a change in the gene pool of a population, both genomic organization (chromosomes, linkage groups) and allele frequencies.

Linnaeus species genus family
order class phylum    kingdom   
Darwin Wallace  natural selection  fitness
   evolution       genetic drift       

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last revision: 15 November 1999
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