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Evolution and Selection of Quantitative Traits$
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Bruce Walsh and Michael Lynch

Print publication date: 2018

Print ISBN-13: 9780198830870

Published to Oxford Scholarship Online: September 2018

DOI: 10.1093/oso/9780198830870.001.0001

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Short-term Changes in the Mean: 1. The Breeder’s Equation

Short-term Changes in the Mean: 1. The Breeder’s Equation

(p.481) 13 Short-term Changes in the Mean: 1. The Breeder’s Equation
Evolution and Selection of Quantitative Traits

Bruce Walsh

Michael Lynch

Oxford University Press

The expected response in the mean of a trait subjected to a single generation of selection from an unselected base population is usually well-approximated by the breeder's equation, R = h2S. This chapter shows how this basic equation generalizes to an important number of settings, such as differential selection on the two sexes, overlapping generations, and selection based on measures other than just an individual's phenotype. It also briefly examines selection response on multiple traits.

Keywords:   BLUP selection, breeder's equation, breeding value, individual selection, Lande Equation, mass selection, progeny testing, Robertson-Price identity, selection accuracy, selection intensity, stratified mass selection

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