Breeding Better Livestock

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Breeding Better Livestock

k, 10/24/2017 - 12:42
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"In beginning the concluding section of this book, let's remind ourselves once more that neither selection nor systems of breeding can create new genes. The can, if properly applied, create new and better animals, but they do it by putting the old genes into new patterns or combinations - not by creating new genes. And it will pay to remind ourselves too that no system of breeding can be guaranteed to be successful nor is any system of breeding simply sort old genes into new patterns, their success or failure is readily seen to hinge upon the relative proportions of superior and inferior genes present in the animals when the chosen system of breeding is applied to them."

Source: Rice, Andrews, & Warwick (1953) Breeding Better Livestock