Video: Qhov sib piv ntawm mitosis thiab meiosis yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev sib piv ntawm cov txheej txheem ntawm mitosis thiab meiosis . Mitosis tsim ob lub diploid (2n) somatic hlwb uas yog genetic zoo tib yam rau ib leeg thiab thawj niam txiv cell, whereas meiosis tsim plaub haploid (n) gametes uas yog genetic cim los ntawm ib leeg thiab tus thawj niam txiv (kab mob) cell.
Cov lus nug tseem ceeb yog dab tsi yog qhov txawv ntawm mitosis thiab meiosis?
Mitosis muab tib lub hlwb rau ib leeg thiab rau niam cell, thaum meiosis ua rau genetic variation vim hla dhau thiab ywj siab assortment. Mitosis muab nuclei nrog tib tus lej ntawm chromosomes li niam cell thaum meiosis muab cov hlwb nrog ib nrab tus lej.
Ib sab saum toj no, tsib qhov sib txawv ntawm mitosis thiab meiosis yog dab tsi? Ob tug ntxhais hlwb raug tsim tom qab mob mitosis thiab cytoplasmic division, thaum plaub tus ntxhais hlwb raug tsim tom qab meiosis . Cov ntxhais hlwb tshwm sim los ntawm mob mitosis yog diploid, thaum cov tshwm sim los ntawm meiosis ua haploid. Cov menyuam ntxhais tsim tom qab meiosis muaj ntau haiv neeg.
Tsuas yog li ntawd, qhov zoo sib xws thiab qhov sib txawv ntawm mitosis thiab meiosis yog dab tsi?
Meiosis muaj ob lub voj voog ntawm kev sib cais ntawm caj ces thiab kev faib cellular thaum mob mitosis tsuas muaj ib leeg xwb. Hauv meiosis homologous chromosomes cais ua rau cov menyuam ntxhais uas tsis muaj caj ces zoo ib yam. Hauv mob mitosis cov ntxhais hlwb yeej zoo ib yam rau niam txiv thiab ib leeg.
Dab tsi yog 4 qhov zoo sib xws ntawm mitosis thiab meiosis?
Ob leeg mitosis thiab meiosis yog cov txheej txheem multistage. Cov theem yog interphase, prophase, metaphase, anaphase thiab telophase. Cov txheej txheem zoo ib yam tshwm sim hauv txhua theem no rau mitosis thiab meiosis . Interphase yog cell loj hlob thiab DNA replication hauv kev npaj rau kev faib cell.
Pom zoo:
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