2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev hloov pauv hauv kev thov piav qhia kev hloov pauv hauv cov neeg siv khoom xav yuav khoom tshwj xeeb lossis kev pabcuam, tsis hais qhov txawv ntawm nws tus nqi. Qhov kev hloov pauv tuaj yeem tshwm sim los ntawm kev hloov pauv ntawm cov nyiaj tau los, kev nyiam ntawm cov neeg siv khoom, lossis tus nqi sib txawv raug them rau cov khoom muaj feem xyuam.
Kev thov cuam tshuam li cas los ntawm kev hloov?
Hloov pauv hauv yam xws li nruab nrab cov nyiaj tau los thiab kev nyiam tuaj yeem ua rau tag nrho qhov kev thov nkhaus hloov mus rau sab xis lossis sab laug. Qhov no ua rau kom muaj ntau dua lossis qis dua yuav tsum tau thov ntawm tus nqi muab. Ceteris paribus assumption. Kev thov nkhaus cuam tshuam txog tus nqi thiab qhov ntau xav tau yog tias tsis muaj lwm yam hloov pauv.
Yam hloov pauv li cas ntsuas?
Kev hloov pauv ntawm qhov xav tau tuaj yeem ntsuas los ntawm kev txav ntawm kev thov nkhaus, thaum kev hloov pauv hauv kev thov ntsuas los ntawm ua haujlwm hauv kev thov nkhaus. Cov nqe lus, kev hloov pauv ntawm qhov xav tau yog hais txog kev nthuav dav lossis kev cog lus ntawm kev thov, thaum hloov pauv hauv kev thov txhais tau tias nce lossis txo qhov kev thov.
Yuav ua li cas yog hom kev hloov pauv hauv kev thov?
Hloov pauv hauv kev thov suav nrog nce lossis txo qhov kev thov. Vim qhov kev hloov pauv ntawm tus nqi ntawm cov khoom lag luam, cov nyiaj tau los ntawm cov neeg siv khoom, thiab cov kev nyiam ntawm cov neeg siv khoom, thiab lwm yam kev thov rau cov khoom lossis kev pabcuam hloov pauv.
Dab tsi ua rau muaj kev hloov pauv ntawm kev thov thiab kev xa khoom?
Hloov hauv Cov Khoom Muag. … Nov yog ib txoj hauv kev uas yuav tsum nco ntsoov: ib qho kev txav raws li qhov xav tau nkhaus, ua rau muaj kev hloov pauv ntauxav tau, yog ib txwm tshwm sim los ntawm hloov pauv hauv cov khoom siv nkhaus. Ib yam li ntawd, ib qho kev txav mus los ntawm cov khoom siv nkhaus, uas ua rau muaj kev hloov pauv ntawm qhov khoom, yog ib txwm tshwm sim los ntawm kev hloov pauv ntawm qhov xav tau nkhaus.
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.
