Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Kukosha kwemipiro yaMcClintock kwakaratidzwa muma1960, apo basa revaFrench geneticists Francois Jacob naJacques Monod rakatsanangura mutemo wechizvarwa we lac operon, pfungwa yaakaratidza neAc / Ds muna 1951. Pashure pokunge Jacob naMonod vanyora mu1961 muJournal of Molecular Biology nyaya yaiti "Genetic regulatory mechanisms in the synthesis of proteins", McClintock akanyora nyaya yeAmerican Naturalist achienzanisa lac operon nebasa rake rokudzora zvinhu zviri muchibage. Kunyange mukupera kwezana ramakore rechimakumi maviri, mupiro waMcClintock kuchirwere chemhuka wakanga usingazivikanwi zvikuru sewakasvika pakuwanikwa kwekugadziriswa kwemajini.McClintock akapiwa chikwereti chakakura nekuwana kushandurwa mushure mekunge vamwe vatsvakurudzi pakupedzisira vakawana nzira iyi mumabhakitiriya, mbiriso, uye bacteriophages mukupera kwema1960 uye kutanga kwema1970. Munguva iyi, sayenzi yemamolecular biology yakanga yagadzira unyanzvi hutsva hunokosha, uye masayendisiti akakwanisa kuratidza hwaro hwemamolecular hwokuchinja. Muma1970, Ac naDs vakagadzirwa nemamwe masayendisiti uye zvakaratidzwa kuti aiva ma transposon ekirasi yechipiri. Ac transposon yakakwana inogona kubudisa transposase inoshanda, inodiwa kuti chinhu chacho chifambe mukati megenome. Ds ine mutation mu transposase gene yayo, izvo zvinoreva kuti haigoni kufamba pasina imwe tsime re transposase. Nokudaro, sezvakacherechedzwa naMcClintock, Ds haigoni kufamba pasina Ac. Spm yakaratidzirwawo se transposon. Tsvakurudzo dzakazotevera dzakaratidza kuti transposons kazhinji hadzifambi kunze kwokunge sero racho raiswa pasi pokunetseka, zvakadai sokupiswa nemwaranzi kana kuti kutenderera kwokuputsika-kubatanidza-bhiriji, uye nokudaro kushandiswa kwadzo panguva yokunetseka kunogona kushanda sechinhu chinokonzera misiyano yemasikirwo nokuda kwedzidziso. McClintock akanzwisisa basa re transposons mukushanduka-shanduka uye kuchinja kwegenome kare vamwe vatsvakurudzi vasati vanzwisisa pfungwa yacho. Mazuva ano, Ac/Ds inoshandiswa sechishandiso muzvidzidzo zvezvirimwa kugadzira zvirimwa zvinoshanduka zvinoshandiswa pakuratidza mashandiro anoita majini.  Mubvunzo: Spm yakazivikanwa sei?
transposon