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When a foreign DNA is introduced into an organism, how is it maintained in the host and how is it transferred to the progeny of the organism?
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When a foreign DNA is introduced into an organism, it binds with the chromosome of the host organism because of recombination. When progeny of the host organism is produced (through sexual or asexual reproduction), the new gene is passed on to the progeny because of inheritance. This is similar to any defective gene being passed on from one generation to the next generation.
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