Video: Qhov kev tshwm sim ua ntej txhais li cas ntawm kev kuaj DNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dab tsi yog Ua ntej yuav tshwm sim ? Yog tias kuaj caj ces cais cov kuaj txiv neej, tiam qhov tshwm sim ntawm leej txiv yuav poob mus rau 0%. Yog tias DNA kuaj ua tsis cais cov kuaj txiv neej, tiam qhov tshwm sim ntawm leej txiv yuav nce mus rau ntau tshaj 99%.
Yog li, qhov tshwm sim ntawm leej txiv 99.99 txhais li cas?
Qhov tshwm sim ntawm leej txiv 99.99 % txhais tau tias . Lub sij hawm Qhov tshwm sim ntawm Leej Txiv 99.99 % hais txog qhov xaus ntawm DNA leej txiv xeem tau. Yog tias koj cov txiaj ntsig tau hais tias qhov tshwm sim ntawm leej txiv thiab, muaj ntau yam ntawm 99% - 99.9999% txhais tau tias leej txiv raug liam ntau tshaj qhov yuav yog leej txiv yug ntawm tus menyuam.
Ib yam li ntawd, kev kuaj DNA puas tuaj yeem yog 0%? Tsis paub meej DNA Cov txiaj ntsig feem ntau, 15 cov cim yog kuaj rau qhov sib tw, tab sis cov lus teb kom meej ua tau mus txog nrog tsawg li rau tus cim. Nyob rau hauv txiv neej kuaj , tej yam tshwm sim saum toj no 0 % thiab qis dua 99% suav tias yog qhov tsis lees paub los ntawm kev lees paub Kev kuaj DNA chav kuaj.
Ib yam li ib tug yuav nug, pes tsawg feem pua ntawm DNA kuaj yuav tsum ua kom zoo?
Leej txiv tuaj yeem txiav txim siab los ntawm cov kev ntsuam xyuas muaj tseeb hauv cov ntshav lossis cov ntaub so ntswg ntawm leej txiv (los yog leej txiv raug liam), leej niam thiab tus menyuam. Cov kev ntsuam xyuas no muaj qhov tseeb ntawm qhov nruab nrab ntawm 90 thiab 99 feem pua.
d2s1338 txhais li cas ntawm kev kuaj DNA?
Locus (plural: loci) yog ib lub sij hawm siv rau lub DNA cov cim ntawd raug kuaj thiab tshaj tawm rau koj Kev kuaj DNA tshwm sim. Qhov no txhais tau tias tias ntawm tus cim no ib tug neeg muaj ob qho tib si. Piv txwv li, yog nyob rau hauv D2S1338 ib tug neeg muaj ob 8s daim ntawv qhia yuav tsuas qhia tias noob ib zaug xwb.
Pom zoo:
Qhov twg tshwm sim thawj lub teeb nyob ntawm qhov tshwm sim lossis lub teeb ywj pheej?
Lub Teeb-Dependent thiab Lub Teeb-Independent Reactions. Cov tshuaj tiv thaiv lub teeb, lossis cov tshuaj tiv thaiv lub teeb-dependent, yog thawj zaug. Peb hu lawv ob leeg thiab ob lub npe. Nyob rau hauv lub teeb-dependent tshwm sim ntawm photosynthesis, lub zog ntawm lub teeb propels lub electrons los ntawm ib tug photosystem mus rau lub high-zog lub xeev
Dab tsi tshwm sim ntawm Theodor Engelmann qhov kev sim nto moo qhia rau nws uas wavelength S yog tus tsav tsheb zoo tshaj plaws ntawm photosynthesis?
Cov kab mob sib sau ua ke ntau tshaj plaws nyob ze ntawm ib feem ntawm cov alga uas tau nthuav tawm cov xim liab thiab xiav wavelengths. Engelmann qhov kev sim ua kom pom tias lub teeb liab thiab xiav yog lub zog zoo tshaj plaws rau photosynthesis
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Yuav ua li cas yog qhov tshwm sim ntawm seafloor nthuav dav ntawm qhov loj ntawm lub hiav txwv pem teb?
Mid-ocean ridges thiab seafloor nthuav dav tuaj yeem cuam tshuam cov dej hiav txwv. Raws li dej hiav txwv crust txav deb ntawm qhov ntiav nruab nrab ntawm dej hiav txwv ridges, nws txias thiab dab dej thaum nws ua ntom. Qhov no ua rau kom qhov ntim ntawm dej hiav txwv phiab thiab txo cov dej hiav txwv
Yuav ua li cas koj pom qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug?
Txhawm rau xam qhov tshwm sim ntawm qhov tshwm sim tshwm sim tsawg kawg ib zaug, nws yuav yog qhov sib ntxiv ntawm qhov xwm txheej tsis tshwm sim. Qhov no txhais tau hais tias qhov tshwm sim ntawm qhov tshwm sim yeej tsis tshwm sim thiab qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug yuav sib npaug, lossis 100% txoj hauv kev