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The manipulation of variation in quantitative traits: a review of posible genetic strategies



The manipulation of variation in quantitative traits: a review of posible genetic strategies



Journal of Animal Science 60(1): 105-110



Results from the literature are presented to illustrate the likely effect of genetic strategies on intrapopulation phenotypic variance. Inbreeding can increase uniformity for simply inherited and highly heritable traits, but it often leads to increased variability for economically important quantitative traits. There is little evidence that topcrossing reduces phenotypic variance in the offspring. Outbreeding can increase phenotypic uniformity of F1 individuals.

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