Chaw ua taus zes nraum qab yog ib tug txheej txheem uas siv los ua hybrids sai npaum li cas thiab ntau dua tooj piv rau tsob nroj pa yuav nteg qe caag.
Nyob rau hauv chaw ua taus zes thim rov qab, heterozygous kev cog tus xaiv rau nws cov neeg tseem ceeb zoo thiab, tom qab, homozygous niam txiv kab yog derived ntawm no tsob nroj, uas li hla kev, reconstitute yeej yuavtsum caj muaj pes tsawg leeg Parent heterozygous nroj tsuag uas los ntawm cov kab yog derived.
Thaum muaj chaw ua taus zes thim rov qab, ib kauj ruam yog hloov caj ua hauj lwm rau suppress recombination nyob meiosis, mus txog RNAi-mediated down-kev cai uas muab kev koom tes rau sab kev meiotic recombination noob.
Txawm li cas los, cov nroj tsuag heterozygous kawg tsis muaj lus txawv teb chaws DNA.