2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Koj lub peev xwm kev txawj ntse yuav nce siab thaum lub hnub nyoog nruab nrab, thiab tom qab ntawd pib maj mam poob. Peb tam sim no paub qhov no tsis muaj tseeb. Hloov chaw, tam sim no cov kws tshawb fawb pom lub hlwb li txuas ntxiv hloov pauv thiab txhim kho thoob plaws lub neej. Tsis muaj lub sijhawm hauv lub neej thaum lub hlwb thiab nws txoj haujlwm tsuas yog tuav ruaj khov.
Puas kev xav hloov nrog hnub nyoog?
Peb qhov kev xav hloov pauv thoob plaws hauv peb lub neej. Nws yog ncua sij hawm hloov maj mam hloov, pib thaum hluas thiab txuas ntxiv mus rau lub neej tom ntej. Nyob rau hauv txoj kev ua neej nyob no, peb muaj kev poob qis hauv qee qhov ntawm peb txoj kev xav. Qhov no yog lub npe hu ua 'kev paub txog kev laus ib txwm muaj'.
Puas kev txawj ntse ua haujlwm poob qis nrog hnub nyoog?
Muaj yog qhov muaj hnub nyoog me ntsis cuam tshuam hauv qee qhov kev puas siab puas ntsws -xws li kev hais lus muaj peev xwm, qee qhov peev xwm ntawm tus lej thiab kev paub dav dav-tab sis lwm yam kev puas siab puas ntsws poob qis txij li hnub nyoog nruab nrab mus txog, lossis txawm ntxov. Cov tom kawg suav nrog kev nco, kev ua haujlwm, kev ua haujlwm nrawm thiab kev xav.
Puas muaj peev xwm kawm poob qis nrog hnub nyoog?
Hnub nyoog yog feem ntau cuam tshuam nrog kev poob qis ntawm kev txawj ntseuas tseem ceeb rau kev tswj hwm kev ywj pheej, xws li kev kawm txuj ci tshiab. Ntau hom kev kawm ntawm lub cev muaj zog zoo li tau khaws cia zoo nrog lub hnub nyoog, thaum kawm cov dej num uas koom nrog kev sib raug zoo yuav raug cuam tshuam tsis zoo.
hnub nyoog twg puas siab puas ntsws pib?
Lub hlwb lub peev xwm rau kev nco, kev xav thiab kev nkag siab (kev paub txog kev ua haujlwm) tuaj yeem pib tsis zoo txij li hnub nyoog 45, pom kev tshawb fawb luam tawm ntawm bmj.com hnub no.
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 kev txawj ntse lossis kev txawj ntse?
Tus kws tshaj lij yog hais txog kev txawj ntse lossis kev paub zoo. Xib fwb Spencer qhov kev txawj ntse nyob rau hauv lub teb ntawm molecular biology yog heev saib. txhais tau tias txawj ntse? : kom muab tswv yim tshaj lij feem ntau tom qab ua tib zoo kawm.
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.
