2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ntau Cov Ntaub Ntawv, tab sis Cov Lus Nug Tseem Ceeb. Cov kws tshawb fawb tau hais tias qhov kev hloov pauv loj tshaj plaws muaj "kev ua kom zoo dua qub." Tab sis ntau tus kws tshaj lij tsis tau yaum.
Yuav ua li cas yog COVID-19 hloov pauv?
Ua tsaug rau kev tshawb fawb tsis tseeb, lo lus "mutant" tau dhau los ua cov kab lis kev cai nrov nrog qee yam uas txawv txav thiab txaus ntshai. Txawm li cas los xij, hauv kev muaj tiag, cov kab mob zoo li SARS-CoV-2, tus kab mob uas ua rau COVID-19, tau hloov pauv txhua lub sijhawm thiab feem ntau cov txheej txheem no tsis muaj kev cuam tshuam rau kev pheej hmoo tus kab mob ua rau tib neeg.
Kev hloov pauv ntawm tus kab mob ua rau COVID-19 tshwm sim li cas?
Thaum cov kab mob kis rau koj, lawv txuas rau koj lub hlwb, nkag mus rau hauv lawv, thiab luam lawv cov RNA, uas pab lawv sib kis. Yog tias muaj qhov yuam kev, RNA hloov pauv. Cov kws tshawb fawb hu cov kev hloov pauv no.
Kev hloov pauv tshiab ntawm COVID-19 txawv li cas los ntawm qhov qub?
Piv rau thawj hom kab mob, cov neeg kis tus kab mob tshiab - hu ua 614G - muaj cov kab mob ntau dua hauv lawv lub qhov ntswg thiab caj pas, txawm tias lawv zoo li tsis muaj mob. Tab sis lawv kis tau ntau dua rau lwm tus.
Puas MU variant kis tau ntau dua?
Nws hu ua Mu. Cov kws tshaj lij hais tias kev hloov pauv caj ces hauv qhov kev hloov pauv no tuaj yeem ua rau nws kis tau ntau dua thiab muaj peev xwm zam dhau qhov kev tiv thaiv tau txais los ntawm kev txhaj tshuaj.
Pom zoo:
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).
Puas yog jurassic ntiaj teb hloov pauv hloov pauv hloov pauv?
Qee zaum, paub meej, koj yuav tau rov qab mus rau lub sijhawm dhau los - txuag manually, thiab feem ntau, raws li game's autosave yog… tsis zam txim - tab sis feem ntau ntawm cov lub sijhawm koj tuaj yeem khaws cov khoom thiab khaws cia nrog.
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.
