2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov knucklebones tau hloov los ntawm cov hlau me me "jacks", uas nws cov duab tau hais tias zoo ib yam li qub yaj knucklebones uas tau siv. Qhov kev hloov pauv zuj zus no tau ua rau niaj hnub no kev ua si ntawm jacks uas tau ua si niaj hnub no.
Ntawm no yog dab tsi ntawm knucklebones?
Knucklebones yog kev ua si ntawm keeb kwm yav dhau los, feem ntau ua si nrog tsib yam khoom me me. Qhov kev ua si niaj hnub no yog hu ua Jacks thiab yog plyed nrog kaum khoom. Keeb kwm cov "knucklebones" yog cov pob txha hauv pob taws ntawm yaj.
Dab tsi yog Roman kev ua si knucklebones?
Knucklebones thiab Jacks (kev ua si ntawm tsib pob zeb) tau ua si los ntawm pov pob thiab sim khaws pob pob ntau li koj tuaj yeem ua ntej yuav tsum tau ntes pob ntawm lwm tus tes. Koj tuaj yeem sim ua qhov txawv ntawm qhov no los ntawm kev pov pob thiab khaws ib pob txha thiab tom qab ntawd tuav lub pob ntawm tib txhais tes li pob txha.
kab lis kev cai tseem ceeb ntawm knucklebones yog dab tsi?
Tiamsis thaum 18th caug xyoo, lawv siv knucklebones raws li lawv tau siv nyob rau hauv ancient sij hawm, xav txog yav tom ntej. Tshwj xeeb tshaj yog, ntau tus ntxhais hluas tau siv knucklebones los pab lawv los saum ntuj los qhia lawv tus txiv yav tom ntej thiab/lossis lub sijhawm lossis qhov chaw thaum lawv yuav xub ntsib nws.
Koj ua si Roman knucklebones li cas?
Tus neeg uas ua ntawv faib cov pob txha rau hauv av thiab siv nws txhais tes los ualub koov nyob ze lawv nrog nws tus ntiv tes xoo thiab ntiv tes taw kov hauv av. Nrog nws txhais tes, nws pov lub jack nyob rau saum huab cua thiab flicks ib pob txha pob txha nyob rau hauv lub koov ua ntej yuav ntes tus jack.
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.
