While this might save asterina phylactica in the short term it might become more vulnerable in the future because of the genetic effects of inter-breeding.
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Nickerson said the farm-bred salmon threaten the genetic integrity of wild salmon by breeding with them.
Boosting genetic diversity means more and more breeding with mates drawn from other countries, with parents selected to ensure that potential pups will be born without genetic faults, like bad hips or eyes.
The main advantage of using genetic markers is that it speeds up old-fashioned breeding methods, because you no longer have to wait for the tree to grow up to see if it has the desired traits.
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Isolated populations of plants and animals could establish genetic contact with larger communities, creating healthier and more resilient breeding pools.
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Critics of this work say that modern genetic engineering is not an extension of the "traditional" methods of breeding.
But it is odd, at first sight, that genetic modification in a laboratory should weaken a plant any more than traditional breeding methods do.
Koralov works with mice that have many genetic modifications, perhaps as many as seven per mouse, and recreating such animals can require breeding over half a dozen generations.
Australian scientists are attempted to use genetic modification to develop a strain resistant to Race 4, while those in Honduras are working on breeding a better banana through more conventional means, by cross-pollination.
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