BIOL 2500 Lecture Notes - Lecture 20: Autoradiograph, Fluorescent Tag, Stabilizing Selection
29 Mar 2017
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Document Summary
Estimates of phenotype that is due to the effects of alleles of additive genes are particularly useful in agriculture. High narrow sense heritability values correlate with a greater degree of response to selection. Estimating the potential response to selection for a trait begins with calculation of a selection differential (s), the difference between the means of the whole population and the breeding population. The response to selection (r) depends on the extent to which the difference between the population mean and the mean of the mating individuals can be passed on to progeny o. H2 can be estimated by h2 = r/s. Estimates of heritability have practical applications for plant and animal breeders, and evolutionary biologists. Selection response is expected to be greatest when h2 = 1. 0. Selection operating over many generations has three possible modes that each affect mean and variance in the populations.
