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

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

Video: Dab tsi yog qhov txawv ntawm kab rov tav thiab ntsug hloov cov noob?
Video: Koj pom Los xyov koj pua paub 2024, Kaum ib hlis
Anonim

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 tau tus mob ntawm caj ces cov ntaub ntawv los ntawm niam cell mus rau tus ntxhais cell thaum lub sij hawm faib cell.

Ua li no, kab rov tav thiab ntsug hloov pauv hloov pauv txawv li cas?

Cov ntsiab lus kab rov tav thiab ntsug hais txog rau tiam ntawm cov hlwb koom nrog, i.e., thaum a noob yog pauv nruab nrab ntawm cov tib neeg ntawm cov tiam tsis sib xws, nws tau hais rau ua a kab rov tav hloov ; thiab thaum twg noob yog kis los ntawm niam txiv kab mob rau nws tus kheej progeny, nws yog hais rau ua ntsug.

Tom qab ntawd, lo lus nug yog, dab tsi yog ntsug gene kis? Hauv ntsug gene hloov , cov hloov ntawm caj ces cov khoom yog los ntawm niam txiv mus rau cov xeeb ntxwv. Nws tuaj yeem yog los ntawm kev sib deev lossis kev sib deev. Hauv qhov sib piv, kab rov tav noob hloov yog lub zog ntawm caj ces cov khoom siv los ntawm tus neeg pub khoom noj mus rau tus neeg tau txais cov kab mob uas tsis yog nws cov xeeb ntxwv.

Tsis tas li ntawd, dab tsi yog 3 hom kab rov tav hloov pauv 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.

Puas yog conjugation ntsug lossis kab rov tav hloov cov noob?

Kab rov tav hloov cov noob tej zaum yuav tshwm sim ntawm peb lub ntsiab mechanisms: transformation, transduction los yog kev sib txuas . Transduction suav nrog hloov ntawm DNA Los ntawm ib tug kab mob mus rau lwm yam ntawm bacteriophages. Conjugation koom nrog hloov ntawm DNA ntawm kev sib deev pilus thiab xav tau kev sib cuag ntawm tes-rau-cell.

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