Video: Puas yog cov menyuam ntxhais zoo ib yam rau niam txiv cell hauv meiosis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txheej txheem ua rau plaub cov ntxhais uas yog haploid, uas txhais tau hais tias lawv muaj ib nrab ntawm cov chromosomes ntawm diploid niam txiv cell . Meiosis muaj ob qho tib si zoo sib xws thiab sib txawv los ntawm mob mitosis ,qus a cell kev faib cov txheej txheem uas a niam txiv cell ua ob cov ntxhais zoo tib yam.
Yog li, cov ntxhais cell puas zoo ib yam li niam txiv cell hauv mitosis?
Mitosis . Mitosis yog siv los tsim cov ntxhais uas yog genetically zoo tib yam rau niam txiv hlwb . Cov cell cov ntawv theej - lossis 'replicates' - nws cov chromosomes, thiab tom qab ntawd faib cov chromosomes sib npaug kom paub tseeb tias txhua tus ntxhais cell muaj tag nrho.
Tsis tas li ntawd, puas yog chromosomes hauv cov menyuam ntxhais cov noob caj noob ces zoo ib yam? Thaum kawg ntawm txoj kev faib, duplicated chromosomes muab faib sib npaug ntawm ob hlwb . Cov no cov ntxhais yog genetic zoo tib yam diploid hlwb uas muaj tib chromosome tus lej thiab chromosome hom. Somatic hlwb yog cov piv txwv ntawm hlwb uas faib los ntawm mitosis.
Tsuas yog li ntawd, yuav ua li cas cov ntxhais cell piv rau niam txiv cell hauv meiosis?
Hauv mob mitosis , cov cov ntxhais muaj tib tus naj npawb ntawm chromosomes li cov niam txiv cell , thaum nyob hauv meiosis , cov cov ntxhais muaj ib nrab ntawm cov chromosomes li cov niam txiv.
Cov txheej txheem twg uas cuam tshuam nrog kev faib cell ua rau cov menyuam ntxhais uas tsis zoo ib yam rau niam txiv cell?
Zoo li mitosis, meiosis koom nrog duplication ntawm chromosomes ua ntej kev faib pib. Tom qab cell faib , mitosis tsim ob diploid cov ntxhais . Tom qab ob lub lis piam cell faib , meiosis tsim plaub haploid cov ntxhais.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Ob niam txiv cov plaub hau dub puas tuaj yeem muaj tus menyuam daj ntseg?
Yog lawm, cov noob rau lub teeb lossis cov plaub hau daj yog qhov tsis zoo rau cov plaub hau tsaus nti, txhais tau tias koj xav tau ob daim ntawv luam ntawm cov noob daj (ib qho los ntawm niam, ib qho los ntawm txiv) kom muaj ib tug me nyuam plaub hau daj. Yog hais tias tus me nyuam tau txais ib daim ntawv rau cov plaub hau tsaus thiab ib daim ntawv rau cov plaub hau daj, qhov tsaus ntuj yuav yog qhov tseem ceeb, txhais tau tias tus me nyuam yuav muaj cov plaub hau tsaus
Dab tsi yog niam txiv cell hauv meiosis?
Meiosis yog ib hom kev faib ntawm tes uas txo cov chromosomes hauv niam txiv cell los ntawm ib nrab thiab tsim plaub gamete hlwb. Cov txheej txheem ua rau plaub tus ntxhais lub hlwb uas yog haploid, uas txhais tau hais tias lawv muaj ib nrab ntawm cov chromosomes ntawm diploid niam txiv cell
Cov niam txiv muaj ntshav hom A thiab B puas tuaj yeem muaj menyuam nrog O?
Yog lawm, vim txhua tus neeg muaj ob 'genes' rau hom ntshav. Yog li ntawd, ob tug niam txiv uas muaj hom ntshav A lossis B, yog li ntawd, tuaj yeem tsim tau tus menyuam muaj ntshav hom O. Yog tias lawv ob leeg muaj AO lossis BO noob, txhua tus niam txiv tuaj yeem pub cov noob O rau cov xeeb ntxwv. Tom qab ntawd cov xeeb ntxwv yuav muaj OO noob, ua rau lawv cov ntshav hom O
Vim li cas niam txiv thiab tus ntxhais hlwb hauv mitosis thiab meiosis txawv?
Kev piav qhia: Qhov sib txawv tseem ceeb ntawm mitosis thiab meiosis tshwm sim hauv meiosis theem I. Nyob rau hauv mitosis, tus ntxhais cell muaj tib tus naj npawb ntawm chromosomes li niam txiv cell, thaum nyob rau hauv meiosis, cov ntxhais hlwb muaj ib nrab ntawm cov chromosomes li niam txiv