Dab tsi yog qhov siab tshaj plaws recombination zaus?
Dab tsi yog qhov siab tshaj plaws recombination zaus?

Video: Dab tsi yog qhov siab tshaj plaws recombination zaus?

Video: Dab tsi yog qhov siab tshaj plaws recombination zaus?
Video: 11/06/2021 Mekas Xa Tshuaj Mus Pab 92 Lub Teb Chaws 2024, Kaum ib hlis
Anonim

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.

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