Video: Yuav ua li cas genetic map nrug xam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov zaus ntawm kev hla dhau (% recombination) ntawm ob loci yog ncaj qha ntsig txog lub cev nyob deb nruab nrab ntawm ob loci. Qhov feem pua recombination nyob rau hauv ib qho kev xeem hla sib npaug daim ntawv qhia nyob deb (1 daim ntawv qhia unit = 1% recombination).
Ua raws li qhov no hauv kev xav, koj ua li cas xam cov noob rau centromere nyob deb daim ntawv qhia?
Rau xam tus nyob deb ntawm qhov chaw los ntawm nws chaw nyob hauv daim ntawv qhia units , tsuas yog ntsuas qhov feem pua ntawm tetrads uas qhia cov qauv kev sib cais thib ob rau qhov chaw ntawd thiab faib los ntawm ob. Thaum xav txog ob noob , muaj qhov tshwm sim hauv qab no. Cov loci yog nyob ntawm nyias chromosomes.
Tom qab, lo lus nug yog, dab tsi yog daim duab qhia chaw? Nyob rau hauv cov noob caj noob ces, ib tug centimorgan (abbreviated cM) los yog daim ntawv qhia unit (m.u.) yog a chav tsev rau ntsuas kev sib txuas ntawm caj ces. Nws txhais tau hais tias qhov kev ncua deb ntawm chromosome txoj haujlwm (tseem hu ua loci lossis cov cim) uas qhov xav tau nruab nrab ntawm kev cuam tshuam chromosomal crossovers hauv ib tiam yog 0.01.
Yog li ntawd, koj yuav ua li cas xam recombination nrug?
Cov kev sib txuas nrug yog xam los ntawm kev faib tag nrho cov recombinant gametes rau tag nrho cov gametes.
Dab tsi yog gene mus rau centromer nrug?
Yog li, peb tuaj yeem suav cov nyob deb ntawm a noob los ntawm nws chaw nyob tsuas yog faib cov feem pua ntawm qhov thib ob faib octads los ntawm 2. Gene - centromer nyob deb = ([# ntawm kev faib thib ob octads / tag nrho octads] x 100) / 2. Txhawm rau tshuaj xyuas qhov sib txuas ntawm ob noob Hauv Neurospora, peb tuaj yeem siv tib cov qauv raws li peb tau ua rau Baker's poov xab
Pom zoo:
Nws hu li cas thaum ob daim phiaj dej hiav txwv txav sib nrug thiab tsim cov crust tshiab?
Divergent ciam teb tshwm sim nyob rau hauv cov chaw sib kis uas cov phiaj sib txawv thiab cov crust tshiab yog tsim los ntawm magma thawb los ntawm lub mantle. Daim duab ob txoj hlua loj loj, tig mus rau ib leeg tab sis maj mam txav mus rau qhov sib txawv raws li lawv thauj cov dej hiav txwv tshiab uas tsim los ntawm ntug hiav txwv
Kuv yuav tsum cog ntoo cedar sib nrug npaum li cas?
Peb tau muaj kev vam meej tshaj plaws thaum tib neeg qhov chaw peb 3-3 1/2 ko taw ntoo 20 nti sib nrug. Koj tuaj yeem tso lawv kom ze li 12 txog 14 ntiv tes los tsim kom muaj qhov sib npaug nrawm dua. 5 mus rau 6 ko taw cedars tuaj yeem sib nrug ntawm 20 mus rau 30 ntiv sib nrug nyob ntawm seb koj xav tau qhov thaiv qhov ntev npaum li cas hnub lawv tau teeb tsa
Yuav ua li cas cov ntaub ntawv genetic coded nyob rau hauv DNA?
Genetic code. Cov txheej txheem caj ces yog cov txheej txheem los ntawm cov ntaub ntawv nkag mus rau hauv cov khoom siv caj ces (DNA lossis RNA sequences) tau muab txhais ua cov proteins (amino acid sequences) los ntawm cov hlwb nyob. Cov noob uas code rau cov proteins yog tsim los ntawm tri-nucleotide units hu ua codons, txhua coding rau ib qho amino acid
Yuav ua li cas koj xam lub sij hawm nws yuav siv sij hawm mus ncig teb chaws?
Kwv yees seb koj yuav mus sai npaum li cas ntawm koj qhov kev mus ncig. Tom qab ntawd, faib koj qhov kev ncua deb ntawm koj qhov nrawm. Qhov no yuav muab rau koj anestimation ntawm koj lub sijhawm mus ncig. Piv txwv li, yog tias koj mus ncig yog 240 mais thiab koj yuav tsav 40 mais ib teev, koj lub sijhawm yuav yog 240/40 = 6hours
Yuav ua li cas koj xam lub sij hawm nws yuav siv ib yam khoom los poob?
Ntsuas qhov deb ntawm qhov khoom yuav poob hauv ko taw nrog tus pas ntsuas lossis ntsuas daim kab xev. Faib qhov kev ncua deb los ntawm 16. Piv txwv li, yog tias cov khoom yuav poob 128 ko taw, faib 128 los ntawm 16 kom tau 8. Xam cov square root ntawm cov kauj ruam 2 los nrhiav lub sij hawm nws yuav siv cov khoom poob hauv vib nas this