2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib qho no hu ua delta variant. Tus kab mob delta coronavirus tau suav tias yog "kev txhawj xeeb ntau yam" los ntawm CDC vim tias nws zoo li kis tau yooj yim dua los ntawm ib tus neeg mus rau lwm tus. Raws li lub Xya Hli 2021, delta tau suav tias yog hom kab mob sib kis tau zoo tshaj plaws ntawm SARS-CoV-2 tus mob coronavirus txog tam sim no.
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.
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.
Tus kab mob COVID-19 tshiab puas kis tau yooj yim dua?
Cov kab txawv no zoo li kis tau yooj yim dua thiab nrawm dua li cov kab mob tseem ceeb, thiab lawv kuj tuaj yeem ua rau mob hnyav dua, tab sis xav tau kev tshawb fawb ntxiv los txiav txim siab.
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.
Pom zoo:
Dab tsi yog qhov hloov pauv thiab hloov pauv hloov pauv?
Point mutations hloov ib leeg nucleotide. Frameshift kev hloov pauv yog ntxiv lossis tshem tawm ntawm nucleotides uas ua rau muaj kev hloov pauv hauv kev nyeem ntawv. frameshift thiab point mutation yog dab tsi? Ib qho kev hloov pauv cuam tshuam rau ib khub hauv paus.
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?
