Recombination tshwm sim thaum ob lub molecules ntawm DNA pauv cov khoom ntawm lawv cov caj ces nrog ib leeg. Ib qho piv txwv tseem ceeb tshaj plaws ntawm kev sib koom ua ke tshwm sim thaum lub sij hawm meiosis (tshwj xeeb, thaum lub sij hawm prophase I), thaum homologous chromosomes kab hauv khub thiab sib pauv ntu ntawm DNA.
Puas recombination tshwm sim hauv mitosis lossis meiosis?
Whereas meiotic recombination tshwm sim thaum meiosis, feem ntau mitotic recombination tej zaum tsis tshwm sim thaum lub sij hawm mitosis, tab sis thaum interphase.
Puas recombination tshwm sim hauv meiosis I lossis II?
In meiosis II, cov chromosomes no tau sib cais ntxiv mus rau tus muam chromatids. Meiosis I suav nrog kev hla lossis rov ua dua ntawm cov khoom siv caj ces ntawm chromosome khub, thaum meiosis II tsis. Qhov no tshwm sim nyob rau hauv meiosis I nyob rau hauv ib tug ntev thiab nyuaj prophase I, faib ua tsib sub-phase.
Puas recombination tshwm sim hauv mitosis?
Recombination during mitosis tshwm sim los kho ib leeg-stranded gaps thiab ob-stranded so nyob rau hauv lub DNA ob helix. Qhov tseeb, tsis muaj peev xwm ua kom muaj kev sib koom ua ke ntawm homologous, tus nqi ntawm kev hloov pauv, chromosome rearrangements, thiab DNA puas tsuaj nce.
Nyob rau theem twg recombination tshwm sim hauv meiosis?
Recombination tshwm sim Thaum the Prolonged Prophase of Meiosis I. Prophase I yog qhov ntev tshaj plaws thiab sib cav qhov tseem ceeb tshaj plaws ntawm meiosis, vimrecombination tshwm sim thaum lub caij no.
