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Unformatted text preview: heritable phenotypes in a population. In text, modern example of Daphne finchesmedium ground finch variable heritable-proportion of genetic control over trait in terms of inheritance measure heritability by comparing parents (midparent=avg of mom and dad) and kids vary in fitness =contribution of genes to future generations. Survival, reproduction, quality of offspring. '77 drought-less seeds, smaller and softer. Population of finches crashed. Fitness NOT random! Avg beak depth increased. ...EVOLUTION! Can't always see natural selection at work Ex: longer horned lizards more likely to survive. ..natural selection?...
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- Spring '07