Environment and Phenotype Upper Sixth Biology. Aims To understand The effect of the environment on the phenotype Specific examples The function of the.

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Presentation transcript:

Environment and Phenotype Upper Sixth Biology

Aims To understand The effect of the environment on the phenotype Specific examples The function of the lac operon in E coli

Phenotype Phenotype = Genotype + environment Height in humans Fur colour in the Himalayan rabbit Many characteristics are determined by the information help in the genes and also the environment

The lac Operon in E coli E coli is a bacteria normally found in the gut It needs enzymes to carry out the breakdown of nutrients Lactose permease, Β galactosidase The expression of these genes depends on the environment If the bacteria is grown in glucose, it doesn’t produce either If grown in lactose, both genes are expressed

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