2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Muaj ob hom kev hloov pauv: dav dav thiab tshwj xeeb. Hauv kev hloov pauv dav dav, tus kab mob bacteriophages tuaj yeem khaws ib feem ntawm tus tswv tsev genome. Hauv qhov sib piv, nrog kev hloov pauv tshwj xeeb, cov kab mob bacteriophages khaws tsuas yog qee qhov tshwj xeeb ntawm tus tswv tsev DNA.
Dab tsi yog qhov txawv ntawm cov lus nug dav dav thiab cov lus qhia tshwj xeeb?
Kev hloov pauv tsuas yog hloov pauv DNA ntawm ib lub xovtooj mus rau lwm qhov ntawm tus kabmob rov ua dua. … Kev hloov pauv dav dav tsis txwv rau qee qhov DNA ib ntus. Hauv kev hloov pauv tshwj xeeb, tsuas yog qee tus tswv sequence raug xa mus (nrog rau phage DNA).
Kev hloov pauv dav dav sib txawv ntawm kev hloov pauv tshwj xeeb Yuav ua li cas hloov pauv dav dav txawv ntawm kev hloov pauv tshwj xeeb li cas?
Qhov sib txawv tseem ceeb ntawm kev hloov pauv dav dav thiab tshwj xeeb yog qhov kev hloov pauv dav dav yog ua los ntawm cov kab mob bacteriophages uas cov kab mob ntawm tes yog lysed thaum cov bacteriophages tshiab raug tso tawm thaum tshwj xeeb kev hloov pauv tau ua tiavlos ntawm kev kub ntxhov bacteriophages nyob rau hauv uas cov kab mob ntawm tes tsis lysed, thiab viral …
Dab tsi yog qhov txawv ntawm kev hloov pauv dav dav thiab hloov pauv?
Nyob rau hauv kev hloov pauv, cov kab mob coj mus rau ib daim DNA ntab hauv nws ib puag ncig. Hauv transduction, DNA yogyuam kev tsiv ntawm ib tus kab mob mus rau lwm tus los ntawm tus kab mob. Hauv kev sib txuas, DNA yog kis ntawm cov kab mob los ntawm lub raj ntawm cov hlwb.
Kev hloov pauv tshwj xeeb txawv li cas?
Kev hloov pauv tshwj xeeb txawv li cas ntawm lysogeny li niaj zaus? Lub prophage nyob rau hauv tshwj xeeb transduction yog nrog nws daim ntawm tus tswv chromosomal DNA. … Thaum lub sij hawm lysogeny, tus kab mob genome koom ua ke rau hauv tus tswv DNA, dhau los ua ib feem ntawm lub cev ntawm chromosome.
Pom zoo:
Ntawm kev pauv pauv pauv hloov pauv?
Kev sib pauv pauv hloov pauv yog daim ntawv cog lus nyiaj txiag uas tau teev tseg thiab ua lag luam ntawm kev sib pauv hloov pauv. Qhov yooj yim hais, cov no yog cov khoom siv uas tau pauv pauv hauv kev tswj hwm. … Cov yav tom ntej thiab cov kev xaiv yog ob qho kev sib pauv uas nrov tshaj plaws.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
Los ntawm kev hloov pauv hloov pauv hloov pauv?
Kev hloov pauv hloov pauv hloov pauv (TMA) yog qhov isothermal (tsis hloov pauv nucleic acid kub), ib leeg-tube nucleic acid amplification system siv ob lub enzymes, RNA polymerase thiab thim rov qab kev sau ntawv. … Cov txheej txheem no tuaj yeem siv los tsom rau RNA thiab DNA.
