[BIOLOGY 202L] - Final Exam Guide - Comprehensive Notes for the exam (35 pages long!)
29 Nov 2016
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Document Summary
Quantitative traits are influenced by genetics and by the environment. Phenotypic variance can be partitioned into genetic variance and environmental variance. Vp = va + vd + ve. Measures how much of the phenotypic variability is due to genetic variance and how much is due to environmental variance. Heritability h2 = vg/vp = r/s = vg/(vg + ve) Calculating the fraction of total phenotypic variance that is genetic. To calculate what proportion of the phenotypic variation is due to additive genetic effects. H2 is the proportion of variability that can be passed on from parent to offspring. Tells us whether selection on the parents will produce inherited changes in the offspring. The slope h2 allows us to predict how a population will respond to artificial or natural selection. Degree to which selection on the parents will produce inherited changes in the offspring is determined by the narrow sense heritability of the trait.
