Video: Puas yog chromosomes kab ntawm lub phaj metaphase ntawm lub cell hauv mitosis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Metaphase . Chromosomes kab ntawm lub phaj metaphase , nyob rau hauv nro los ntawm lub mitotic spindle. Ob tug muam chromatids ntawm txhua chromosome yog ntes los ntawm microtubules los ntawm opposite spindle ncej. Hauv metaphase , lub spindle tau ntes tag nrho cov chromosomes thiab ua kab lawv nce ntawm nruab nrab ntawm lub cell , npaj faib.
Hais txog qhov no, ua li cas chromosomes kab thaum lub sij hawm metaphase hauv mitosis?
Cov spindle fibers yuav txav mus chromosomes mus txog rau lawv ua kab ntawm spindle equator. Metaphase : Thaum lub sij hawm metaphase ,,ib 46 chromosomes kab nrog rau qhov chaw ntawm lub cell ntawm lub metaphase phaj. Anaphase: Thaum anaphase, lub centromere splits, cia tus muam chromatids cais.
Tsis tas li ntawd, muaj pes tsawg chromosomes nyob rau hauv metaphase hauv mitosis? 46 chromosome ua
Tsis tas li ntawd, puas chromosome khub kab hauv mitosis?
Hauv meiosis , homologous khub kab raws li cov neeg hauv meiosis Kuv nyob rau hauv kev npaj rau zaum kawg segregation nyob rau hauv meiosis II. Nws nyob hauv mob mitosis tias homologous khub kab raws li khub , thiab interphase, ntawm chav kawm, tsis yog ib theem uas tus chromosomes txawm tshwm.
Thaum lub sij hawm twg ntawm mitosis ua cov duplicated chromosomes kab nyob rau hauv lub equatorial phaj ntawm spindle?
metaphase
Pom zoo:
Muaj pes tsawg chromosomes nyob rau hauv ib tug kab mob cell?
Feem ntau cov kab mob muaj ib los yog ob lub voj chromosomes
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
Yuav ua li cas chromosomes nyob rau hauv metaphase I ntawm meiosis?
Nyob rau hauv metaphase I, homologous khub ntawm chromosomes dlhos rau ntawm ob sab ntawm lub phaj equatorial. Tom qab ntawd, hauv anaphase I, cov spindle fibers cog lus thiab rub cov homologous khub, txhua tus nrog ob chromatids, deb ntawm ib leeg thiab mus rau txhua tus ncej ntawm tes
Dab tsi yog tus naj npawb ntawm chromosomes hauv lub cell haploid?
Lub haploid cell uas muaj tus lej haploid, uas yog tus naj npawb ntawm chromosomes pom nyob rau hauv lub nucleus uas tsim ib txheej. Hauv tib neeg, cov hlwb haploid muaj 23 chromosomes, piv rau 46 hauv cov hlwb diploid. Muaj qhov sib txawv ntawm cov hlwb haploid thiab monoploid
Metaphase kuv txawv ntawm metaphase II li cas?
Qhov txawv ntawm Metaphase 1 thiab Metaphase 2 yog dab tsi? Hauv Metaphase I, 'pairs ntawm chromosomes' yog teem rau ntawm Metaphase phaj thaum, nyob rau hauv Metaphase II, 'chromosomes' yog teem rau ntawm metaphase phaj. Hauv Metaphase I, cov spindle fibers tau txuas rau ob lub centromeres ntawm txhua homologous chromosome