Cov txheej txheem:
- Yuav ua li cas yog tias kev tsis sib haum xeeb tshwm sim thaum meiosis?
- Koj paub li cas yog tias kev tsis sib haum xeeb tshwm sim hauv meiosis 1 lossis 2?
- Cov piv txwv ntawm kev tsis sib haum yog dab tsi?
- Dab tsi yog kev tsis sib haum xeeb thiab thaum twg hauv meiosis tuaj yeem tshwm sim quizlet?
Video: Lub sijhawm meiosis tsis muaj kev cuam tshuam tuaj yeem tshwm sim hauv?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Nondisjunction tuaj yeem tshwm sim thaum anaphase of mitosis, meiosis I, lossis meiosis II. Thaum lub sij hawm anaphase, tus muam chromatids (los yog homologous chromosomes rau meiosis I), yuav sib cais thiab txav mus rau cov ncej ntawm tes, rub los ntawm microtubules.
Yuav ua li cas yog tias kev tsis sib haum xeeb tshwm sim thaum meiosis?
Yog tias tsis muaj kev cuam tshuam tshwm sim hauv meiosis kuv, tag nrho plaub yam khoom ntawm meiosis yuav chromosomally txawv txavOb ntawm plaub yam khoom ntawm meiosis yuav muaj ob daim ntawv theej ntawm chromosome koom nrog hauv qhov kev tshwm sim nondisjunction, thiab ob ntawm plaub yam khoom ntawm meiosis yuav tsis muaj cov ntawv luam ntawm cov chromosome tshwj xeeb.
Koj paub li cas yog tias kev tsis sib haum xeeb tshwm sim hauv meiosis 1 lossis 2?
Nondisjunction tuaj yeem tshwm sim thaum lub sijhawm meiosis I thiab meiosis II, ua rau cov chromosomes txawv txav ntawm gametes. Qhov sib txawv tseem ceeb ntawm kev tsis sib haum xeeb hauv meiosis 1 thiab 2 yog qhov thaum lub sijhawm meiosis 1, homologous chromosomes tsis sib cais thaum nyob hauv meiosis II tus muam chromatids tsis cais
Cov piv txwv ntawm kev tsis sib haum yog dab tsi?
Qhov no tuaj yeem ua rau muaj tus mob nyob rau hauv tus ntxhais cell muaj tus lej ntawm chromosomes txawv txav; ib lub cell muaj ntau chromosomes thaum lwm lub cell tsis muaj. Piv txwv ntawm nondisjunction: Down syndrome Triple-X syndrome Klinefelter's Syndrome
Dab tsi yog kev tsis sib haum xeeb thiab thaum twg hauv meiosis tuaj yeem tshwm sim quizlet?
Nondisjunction tuaj yeem tshwm sim thaum anaphase ntawm meiosis I lossis meiosis II. Yog hais tias nws tshwm sim thaum lub sij hawm meiosis kuv, tag nrho bivalent migrate mus rau ib tug ncej (Daim duab 8.22a). Tom qab ua tiav ntawm meiosis, plaub lub hlwb haploid tshwm sim los ntawm qhov xwm txheej no txawv txav.
Pom zoo:
Cuam tshuam lossis cuam tshuam li cas cuam tshuam kev sib txuas lus?
Txhua zaus peb tham lossis mloog, muaj tej yam uas nkag mus rau hauv txoj kev sib txuas lus meej-yam uas cuam tshuam rau tus neeg txais tau cov lus los ntawm tus xa. Qhov kev cuam tshuam no yog hu ua " noise," thiab muaj ntau hom suab nrov uas tuaj yeem ua rau cov lus raug txhais tsis raug .
Qhov twg tsis muaj kev sib tw tshwm sim hauv meiosis?
Thaum cov hlwb sib faib thaum lub sijhawm meiosis, homologous chromosomes tau muab faib ua ntu zus thaum anaphase I, sib cais thiab cais tawm ntawm ib leeg. Qhov no yog hu ua ywj siab assortment. Nws ua rau gametes uas muaj qhov sib xyaw ua ke ntawm chromosomes .
Kev sib cuam tshuam tuaj yeem tshwm sim qhov twg?
Intertextuality tuaj yeem tsim los ntawm cov ntsiab lus hauv qab no: duplication (ib txoj hlua ntawm cov lus tshwm sim hauv ob phau ntawv xws li tshwm sim hauv cov lus hais) thiab txhais tau tias stylistic (repetition ntawm kev ntxhov siab, suab.
Thaum twg tsis muaj kev cuam tshuam ntawm chromosomes tshwm sim?
Nondisjunction tuaj yeem tshwm sim thaum anaphase of mitosis, meiosis I, lossis meiosis II. Thaum lub sij hawm anaphase, tus muam chromatids (los yog homologous chromosomes rau meiosis I), yuav sib cais thiab txav mus rau cov ncej ntawm tes, rub los ntawm microtubules .
Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
Nyob rau hauv qhov tsis ncaj ncees PN-kho qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog zero, vim tias sib npaug tab sis cov neeg nqa khoom hla hla kev sib tshuam . Thaum pn kev sib tshuam tsis ncaj ncees qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
