Kab rov tav hloov cov noob txhais li cas?
Kab rov tav hloov cov noob txhais li cas?

Video: Kab rov tav hloov cov noob txhais li cas?

Video: Kab rov tav hloov cov noob txhais li cas?
Video: Tus Cawm Seej Hloov Neeg Txoj Hmoo (HD) 2024, Kaum ib hlis
Anonim

Kab rov tav hloov cov noob (HGT) lub lateral hloov mus rau noob (LGT) yog cov txav ntawm caj ces cov khoom ntawm unicellular thiab/los yog multicellular kab mob uas tsis yog los ntawm (" ntsug") kis ntawm DNA los ntawm niam txiv mus rau cov xeeb ntxwv (loj hlob).

Raws li txoj cai, kab rov tav hloov cov noob tshwm sim li cas?

Kab rov tav hloov cov noob muaj tshwm sim ntawm peb lub ntsiab mechanisms: transformation, transduction los yog conjugation. Kev hloov pauv muaj feem cuam tshuam txog ntu luv ntawm DNA liab qab los ntawm cov kab mob hloov pauv tau. Transduction suav nrog hloov DNA los ntawm ib tug kab mob mus rau lwm yam ntawm bacteriophages.

Ib yam li ntawd, 3 hom kab rov tav hloov cov noob yog dab tsi? 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.

Yog li ntawd, dab tsi yog qhov piv txwv ntawm kab rov tav hloov cov noob?

2.3. Feem ntau ntawm piv txwv ntawm kab rov tav hloov cov noob paub nyob rau hauv prokaryotes. Hauv cov kab mob, peb lub hauv paus ntsiab lus tuaj yeem kho tau kab rov tav hloov pauv : transformation (uptake of free DNA ), conjugation (plasmid-mediated hloov ), thiab transduction (phag-mediated hloov ).

Dab tsi yog qhov txawv ntawm kab rov tav thiab ntsug hloov cov noob?

Kab rov tav hloov cov noob (HGT) txhais tau tias yog hloov ntawm caj ces khoom nruab nrab cov kab mob tsis sib txuas nrog kev faib cell [1–3]. Piv txwv li, ntsug qub txeeg qub teg yog kis ntawm caj ces cov ntaub ntawv los ntawm niam cell mus rau tus ntxhais cell thaum lub sij hawm faib cell.

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