Dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv?
Dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv?

Video: Dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv?

Video: Dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv?
Video: Lub zog ntawm kev thov Vajtswv tshav mis nyuj 2024, Kaum ib hlis
Anonim

Dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv piv rau cov kab mob bacteriophage li qub? Cov kab mob bacteriophage tsis tshwm sim los ntawm cov kab mob hauv lub cev kev hloov pauv . Kev hloov pauv hloov DNA los ntawm chromosome ntawm ib lub cell mus rau lwm tus. Cov kab mob bacteriophage siv cov khoom tawg ntawm cov cell nrog nws thaum lub sijhawm kev hloov pauv.

Kuj kom paub yog, qhov txawv ntawm qhov kev hloov pauv dav dav thiab tshwj xeeb yog dab tsi?

Muaj ob hom kev hloov pauv : generalized thiab tshwj xeeb . Hauv generalized transduction , cov kab mob bacteriophages tuaj yeem khaws ib feem ntawm tus tswv tsev genome. Nyob rau hauv sib piv, nrog tshwj xeeb transduction , cov kab mob bacteriophages khaws tsuas yog qee feem ntawm tus tswv tsev DNA.

Ib sab saum toj no, qhov twg zoo tshaj plaws piav qhia txog kev hloov pauv hauv cov kab mob? Kab mob Hloov DNA nrog bacteriophages hu ua kev hloov pauv . Tus kab mob bacteriophage yog tus kab mob uas rov ua dua hauv lub cev kab mob cell. Yog li, Option A yog lawm. Kab mob Txhaj DNA rau hauv lwm lub hlwb nrog kev pab ntawm lub raj, txheej txheem no hu ua Conjugation.

Tom qab ntawd, lo lus nug yog, dab tsi yog lub luag haujlwm ntawm kev sib txuas Pilus?

Cov cell nrog lub conjugation pilus, txuas mus rau lwm tus cell , txuas lub cytoplasm ntawm txhua tus cell thiab tso cai rau cov molecules ntawm DNA hla dhau lub hollow pilus. Feem ntau cov DNA pauv, muaj cov noob yuav tsum tau ua thiab hloov pili, uas yog encoded ntawm plasmid.

Dab tsi yog suav tias yog qhov nruab nrab natural mutation?

Yog xav li cas ua tus nruab nrab natural mutation tus nqi uas tshwm sim thaum DNA replication? Ib qho ntawm txhua trillion nucleotides replicated. Ib ntawm txhua lab nucleotides replicated. Ib ntawm txhua billion nucleotides replicated.

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