2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tsis muaj tsiaj yuav tsim kev txawj ntse zoo li tib neeg yog tias nws qhov xwm txheej tsis zoo ib yam li cov uas xav kom peb cov poj koob yawm txwv tsim lub hlwb loj dua. … Cov uas muaj feem zoo tshaj yog cov apes thiab cov ntses taub ntswg ntev, lossis tej zaum cov ntxhw, vim lawv muaj lub hlwb loj tshaj tom qab peb.
Tus tsiaj txawj ntse tom qab tib neeg yog dab tsi?
Ntxhais apes yog suav tias yog tus ntse tshaj plaws tom qab tib neeg.
Puas lwm hom muaj kev txawj ntse?
Ntau yam tsiaj muaj kev txawj ntse tshwj xeeb uas tso cai rau lawv ua tau zoo hauv lawv qhov chaw nyob, tab sis lawv tsis tshua daws teeb meem tshiab. Qee qhov ua tau, thiab peb hu lawv cov neeg txawj ntse, tab sis tsis muaj leej twg tau ceev-witted li peb.
Yuav ua li cas tsiaj twg thiaj yuav txawj txawj ntse?
Tus Chimpanzee (Pan troglodyte) thiab Bonobo (Pan paniscus) feem ntau yog thawj tus neeg sib tw uas feem ntau cov kws paub txog paj hlwb xav tau lub npe uas muaj peev xwm tau txais tib neeg zoo li kev txawj ntse.
Puas tib neeg kev txawj ntse evolve?
Raws li tus qauv, tib neeg kev txawj ntse yog tuaj yeem hloov mus rau theem tseem ceebvim tias kev sib xyaw ua ke ntawm kev ua kom muaj kev tswj hwm ntawm thaj chaw thiab nce qhov tseem ceeb ntawm kev sib raug zoo.
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.
