Video: Dab tsi yog qhov siab tshaj plaws recombination zaus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv cov chromosomes loj, daim ntawv qhia kev ncua deb yuav ntau dua 50cM, tab sis Maximum recombination zaus yog 50%.
Tib neeg kuj nug, qhov ntau zaus recombination txhais li cas?
Daim ntawv qhia kev sib txuas yog ib daim ntawv qhia raws li qhov zaus ntawm recombination nruab nrab ntawm cov cim thaum lub sij hawm crossover ntawm homologous chromosomes. Qhov loj dua zaus ntawm recombination (segregation) ntawm ob lub cim caj ces, qhov sib nrug ntxiv yog xav tias yog.
Tom qab, lo lus nug yog, dab tsi yog qhov siab tshaj plaws recombination zaus? 50%
Yog li ntawd, yog vim li cas yog qhov siab tshaj plaws recombination zaus 50%?
Recombination ntawm cov noob tshwm sim vim yog lub cev sib hloov ntawm cov chromosomes thaum lub sij hawm meiosis. Cov recombination zaus nruab nrab ntawm ob lub noob tsis tuaj yeem loj dua 50 % vim random assortment ntawm noob generates 50 % recombination (Cov noob uas tsis sib txuas ua rau 1: 1 niam txiv rau cov niam txiv tsis yog niam txiv.
Yuav ua li cas koj pom qhov recombination zaus?
Recombination zaus = 19 + 21/1000 = 40/1000 = 0.04 lossis 4% C thiab D yog 4 daim duab qhia chaw sib nrug ntawm chromosome.
Pom zoo:
Dab tsi yog rau qhov sib txawv loj ntawm lub koom haum los ntawm qhov tsawg tshaj plaws mus rau loj tshaj plaws ecologists?
Lub koom haum loj yog dab tsi, los ntawm qhov tsawg tshaj plaws mus rau qhov loj, uas cov kws tshawb fawb feem ntau kawm? 6 theem sib txawv ntawm lub koom haum uas ecologists nquag kawm yog hom, pejxeem, zej zog, ecosystem, thiab biome
Qhov siab tshaj plaws thiab qhov tsawg kawg nkaus hauv lej yog dab tsi?
Hauv kev ua lej, qhov siab tshaj plaws thiab qhov tsawg kawg nkaus ntawm qhov muaj nuj nqi yog qhov loj tshaj plaws thiab qhov tsawg tshaj plaws uas qhov kev ua haujlwm yuav siv ntawm ib qho chaw. Yam tsawg kawg txhais tau tias qhov tsawg tshaj plaws koj tuaj yeem ua tau ib yam dab tsi
Qhov twg electromagnetic yoj muaj qhov luv tshaj wavelength thiab siab tshaj plaws zaus?
Gamma rays muaj lub zog siab tshaj plaws, qhov luv tshaj wavelengths, thiab cov zaus siab tshaj plaws. Cov xov tooj cua tsis muaj zog, ntawm qhov tod tes, muaj lub zog qis tshaj plaws, qhov ntev tshaj plaws wavelengths, thiab qis tshaj zaus ntawm txhua hom EM hluav taws xob
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Dab tsi yog qhov siab tshaj plaws ntawm qhov poob siab tso cai rau hauv av xaim?
NEC pom zoo tias qhov siab tshaj plaws ua ke voltage poob rau ob qho tib si feeder thiab ceg Circuit Court yuav tsum tsis txhob ntau tshaj 5%, thiab qhov siab tshaj plaws ntawm lub feeder lossis ceg Circuit Court yuav tsum tsis txhob ntau tshaj 3% (Fig. 1). Qhov kev pom zoo no yog qhov teeb meem kev ua haujlwm, tsis yog teeb meem kev nyab xeeb