Synapsis tshwm sim thaum lub sijhawm prophase I ntawm meiosis. Thaum homologous chromosomes synapse, lawv qhov kawg yog thawj zaug txuas rau lub hnab ntawv nuclear. Cov kawg-membrane complexes ces tsiv teb tsaws, pab los ntawm extranuclear cytoskeleton, kom txog rau thaum qhov sib tw kawg tau ua khub.
Puas synapsis tshwm sim hauv prophase 2?
Lwm nqe lus nug yog seb qhov kev sib tham puas tau tshwm sim thaum lub sijhawm prophase II ntawm meiosis II lossis seb nws tuaj yeem tshwm sim thaum lub sijhawm prophase ntawm mitosis. Thaum meiosis kuv, meiosis II, thiab mitosis tag nrho suav nrog prophase, synapsis raug txwv rau prophase I ntawm meiosis vim tias qhov no yog tib lub sijhawm homologous chromosomes ua ke nrog ib leeg.
Lub sijhawm twg ntawm meiosis hla thiab synapsis tshwm sim?
Yog, hla dhau tshwm sim thaum lub sijhawm sib tham thaum cov chromosomes tau ntim rau hauv tetrads. Qhov no tshwm sim hauv prophase of meiosis I.
Yuav ua li cas rau theem 1 synapsis tshwm sim?
Meiotic Arrest nyob rau theem Diplotene ntawm Prophase I
Nyob rau theem leptotene cov chromatin npaj rau hauv ntev thiab nyias strands thiab ntawm zygotene theem cov synapsis ntawm homologous chromosomes tshwm sim, txhawb nqa los ntawm kev sib sau ua ke ntawm lub hauv paus ntsiab lus ntawm synaptonemal complex.
5 theem ntawm prophase 1 yog dab tsi?
Prophase kuv muab faib ua tsib theem: leptotene, zygotene, pachytene, diplotene, thiab diakinesis.
