Environments can be “stable” or fluctuating, and this affects evolutionary rate and direction; different variations can be selected in each generation.

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Presentation transcript:

Environments can be “stable” or fluctuating, and this affects evolutionary rate and direction; different variations can be selected in each generation. What evidence do you have from the Grant’s finch study to support this claim?

Evolution: three coordinated legs

Quick review of genetic vocab Gene vs allele Phenotype vs Genotype Dominant/Recessive Homozygous vs heterozygous What does natural selection act DIRECTLY upon? What does natural selection act INDIRECTLY upon? Does the environment direct new phenotypic variation?

Father of Genetics

Gene Pool Diversity Gene Pool: What maintains genetic diversity in a gene pool? What would decrease diversity in a gene pool?

Microevolution and population genetics Allele frequencies Breeding Bunnies anyone?

Battling Beetles Lab Follow the instructions for squishing. Rock Pocket Mouse Video: http://www.hhmi.org/biointeractive/making-fittest-natural-selection- and-adaptation

Class Data Before After