2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tus tshiab kev txav chaw tawm tswv yim qhia cov lus nug, kev xav, thiab cov txheej txheem es tsis yog qhov kev piav qhia tag nrho lossis txo qis ntawm lub ntiaj teb niaj hnub no.
Kev hloov pauv tshiab yog dab tsi?
Txoj kev hloov pauv tshiab, tseem hu ua kev txav mus los, yog kev sib koom ua ke los kawm txog kev txav ntawm tib neeg, khoom thiab tswv yim thoob plaws txhua qhov ntsuas, piv txwv li, chaw sib raug zoo thiab lub sijhawm kev sib raug zoo, nrog rau nws qhov cuam tshuam rau tib neeg (Cresswell, 2006; Bissell & Fuller, 2011; Conradson, 2011).
kev mus los yog dab tsi?
Kev hloov pauv hauv kev xav hauv kev tshawb fawb txog kev sib raug zoo uas ua ntej lub tswv yim ntawmkev txav mus los. Cov kev xav zoo li no, tsis yog kev nkag siab lub ntiaj teb uas tau kho ntau nrog qee qhov kev txav mus los ntawm qhov chaw, saib lub ntiaj teb ua kua dej thiab ib txwm ua haujlwm.
Mobility social science yog dab tsi?
kev sib raug zoo yog kev txav ntawm cov tib neeg, tsev neeg, tsev neeg, lossis lwm pawg neeg hauv lossis nruab nrab ntawm kev sib raug zoo hauv zej zog. Nws yog ib qho kev hloov ntawm kev sib raug zoo ntawm ib tus neeg tam sim no qhov chaw nyob hauv ib lub zej zog.
Kev tshawb fawb txog kev mus los yog dab tsi?
Kev Tshawb Fawb Txog Kev Mob Nkeeg yog qhov kev sib koom ua haujlwm tshwm sim uas piav qhia txog kev sib raug zoo ntawm kev sib koom ua ke ntawm lub cev, khoom, thiab cov tswv yim. Daim teb qhia txog qhov kev coj ncaj ncees ntawm cov kev txav mus los no thiab lawv cov kev tsis sib haum xeeb.
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).
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.
