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crossing-over is generally assayed by the production of recessive homozygous colonies or sectors produced in a heterozygous strain, whereas gene conversion is assayed by the production of prototrophic revertants produced in an auxotrophic heteroallelic strain carrying two different defective alleles of the same gene.
overkrydsning bestemmes almindeligvis ved frembringelse af recessive homozygote kolonier eller sektorer i en heterozygot stamme, mens genbytning bestemmes ved frembringelse af prototrofe revertanter i en auxotrof heteroallel stamme, som bærer to forskellige, defekte alleler af det samme gen.
