Cov txheej txheem ntawm kev hloov cov noob yog dab tsi?
Cov txheej txheem ntawm kev hloov cov noob yog dab tsi?

Video: Cov txheej txheem ntawm kev hloov cov noob yog dab tsi?

Video: Cov txheej txheem ntawm kev hloov cov noob yog dab tsi?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Transduction, ua txheej txheem nyob rau hauv uas cov kab mob DNA yog txav los ntawm ib tug kab mob mus rau lwm tus los ntawm ib tug kab mob (ib tug bacteriophage, los yog phage). Bacterial conjugation, ib txheej txheem uas koom nrog hloov ntawm DNA ntawm lub plasmid los ntawm ib tug pub cell mus rau ib tug recombinant tau txais cell thaum lub sij hawm cell-to-cell sib cuag.

Tib neeg kuj nug, yuav ua li cas hloov cov gene ua tiav?

Hauv kev hloov pauv, DNA kis tau los ntawm ib lub xovtooj mus rau lwm qhov ntawm cov kab mob bacteriophage. Hauv kab rov tav noob hloov , DNA tau txais tshiab tau muab tso rau hauv lub genome ntawm tus neeg tau txais kev pab los ntawm kev sib koom ua ke lossis kev ntxig. Insertion tshwm sim thaum cov DNA txawv teb chaws nkag mus rau hauv ib lub xovtooj sib koom tsis muaj homology nrog DNA uas twb muaj lawm.

Tom qab ntawd, lo lus nug yog, dab tsi yog hloov gene siv rau? Ntxiv rau, noob hloov mus rau hauv kab lis kev cai los ntawm kev ncaj qha DNA uptake yog siv rau kev lag luam tsim cov genetic engineered proteins. Cov tshuaj, cov tshuaj hormones, khoom noj khoom haus additives, thiab lwm yam khoom muaj txiaj ntsig tuaj yeem tsim los ntawm cov hlwb uas tsim nyog noob ua tau pauv.

Tom qab ntawd, dab tsi yog txhais los ntawm kev hloov cov noob?

Kho mob Txhais ntawm Gene hloov Gene hloov : Kev nkag mus ntawm qhov tsis sib xws caj ces cov ntaub ntawv nyob rau hauv daim ntawv ntawm DNA rau hauv hlwb. Muaj ntau qhov laj thawj ua noob hloov . Tej zaum qhov tseem ceeb ntawm cov laj thawj no yog kev kho cov kab mob siv noob hloov muab cov neeg mob kho noob.

Dab tsi yog 3 hom kab rov tav hloov cov noob?

Muaj peb mechanisms ntawm kab rov tav hloov pauv nyob rau hauv cov kab mob: transformation, transduction, thiab conjugation. Qhov feem ntau mechanism rau kab rov tav gene Kev sib kis ntawm cov kab mob, tshwj xeeb tshaj yog los ntawm cov kab mob pub dawb mus rau ntau hom neeg tau txais, yog kev sib txuas.

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