2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Npaj npaim dais Lawv hloov kho muaj xws li: a dawb tsos - zoo li camouflage los ntawm cov tsiaj nyeg ntawm cov daus thiab dej khov. tuab txheej ntawm cov rog thiab pluab - rau rwb thaiv tsev tiv thaiv qhov txias. thaj chaw me me rau qhov ntim qhov sib piv - kom txo qhov kub poob.
Txoj kev hloov pauv dab tsi ua rau polar bears yuav tsum ua luam dej?
Txawm li cas los xij, nce mus txog qhov nrawm txog li 6 mph hauv dej, polar bears tuaj yeem ua luam dej tau ntev thiab tsis tu ncua rau ntau teev kom tau txais los ntawm ib qho dej khov mus rau lwm qhov. Lawv paws lojtshwj xeeb yog yoog rau kev ua luam dej, uas lawv yuav siv paddle hla dej thaum tuav lawv ob txhais ceg tiaj tus zoo li lub duav.
Vim li cas pos polar bears muaj pob ntseg me?
Vim li cas pos polar bears muaj pob ntseg me? Lub ncov qaumteb qabteb thiab cov Arctic hma liab nyob rau hauv lub txias cheeb tsam muaj me me pob ntseg kom lawv tsis poob ntau lub cev kub. Polar dais thiab Arctic hma liab yog qee yam ntawm cov tsiaj uas muaj pob ntseg me.
Kev hloov pauv li cas rau kev ciaj sia tuaj yeem ua tau?
Polar bears yog qhov tshwj xeeb, ob lub cev thiab lub cev, rau lub ntiaj teb ntawm hiav txwv, dej khov, thiab nqaij: luv luv, stockier claws kom tuav tau zoo dua thiab dej khov; me me, ntau jagged molars thiab loj, sharper canines, zoo dua noj yuav luag tsuas yog carnivorous noj; cov tsho dawb tag nrho los muab camouflage thaum …
Pob pos polar bears noj tib neeg?
Polar bears, tshwj xeeb tshaj yog cov hluas thiab tsis muaj zaub mov, yuav tuaneeg rau zaub mov. … Qhov tseeb tiag txiv neej noj dais tawm tsam tsis tshua muaj tshwm sim, tab sis paub tias tshwm sim thaum cov tsiaj muaj kab mob los yog tej yam tsiaj tsis tshua muaj, feem ntau ua rau lawv tua thiab noj txhua yam uas lawv muaj peev xwm tua tau.
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).
Puas yog jurassic ntiaj teb hloov pauv hloov pauv hloov pauv?
Qee zaum, paub meej, koj yuav tau rov qab mus rau lub sijhawm dhau los - txuag manually, thiab feem ntau, raws li game's autosave yog… tsis zam txim - tab sis feem ntau ntawm cov lub sijhawm koj tuaj yeem khaws cov khoom thiab khaws cia nrog.
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?
