Genetic recombination in Nocardia asteroides
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Gene recombination between strains of N. asteroides of diverse origins has been demonstrated. In particular pairwise combinations, recombinants made up 0.01% of the population. All nine selectable recombinant classes were recovered from a cross between KK4-47 his-10 leu-1 and KK6-119 met-3 phe-3. Recombinants with an auxotrophic marker from each parent constituted 21% of the recombinants.