Txhua khub ntawm homologous chromosomes muaj li cas?
Txhua khub ntawm homologous chromosomes muaj li cas?

Video: Txhua khub ntawm homologous chromosomes muaj li cas?

Video: Txhua khub ntawm homologous chromosomes muaj li cas?
Video: Khuv xim txog hnub tuag kiag 1/30/2019 2024, Kaum ib hlis
Anonim

Homologous chromosomes yog tsim los ntawm chromosome khub ntawm kwv yees li qhov ntev, txoj hauj lwm centromere, thiab staining qauv, rau cov noob nrog tib loci sib raug. Ib homologous chromosome tau txais los ntawm lub cev niam; lwm tus yog txais los ntawm lub cev txiv neej.

Ib yam li ntawd, tib neeg nug, qhov piv txwv ntawm homologous chromosomes yog dab tsi?

Homologous Chromosomes . Hauv diploid (2n) kab mob, cov genome yog tsim los ntawm homologous chromosomes . Hauv vaj peas, rau piv txwv , gene rau pod xim ntawm leej niam chromosome tej zaum yuav daj allele; cov gene homologous niam txiv chromosome tej zaum yuav yog ntsuab allele.

Ib yam li ntawd, puas yog homologous khub ntawm chromosomes muaj nyob rau hauv mitosis? Homologous chromosomes tsis yog muaj nyob rau hauv mitosis , theej xwb nyob rau hauv meiosis . Hauv mob mitosis koj muaj tus muam chromatids; homologous chromosomes yog cov chromosome khub , txhua tus los ntawm ib tug niam txiv.

Ib yam li ntawd, koj tuaj yeem nug, cov yam ntxwv dab tsi ua ob homologous chromosomes sib koom?

Homologous chromosomes zoo sib xws, tab sis tsis zoo ib yam. Ib tug los ntawm niam thiab ib tug los ntawm txiv. Lawv nqa cov noob rau tib tus cwj pwm qub qub, tej zaum yuav muaj ntau yam sib txawv ntawm tib lub noob. Ob homologous chromosomes qhia txoj haujlwm ntawm centromere, hom / qhov chaw ntawm cov noob, thiab ntev /puab.

Yuav ua li cas koj txheeb xyuas homologous chromosomes?

Homologous chromosomes tuaj yeem yog txheeb xyuas thaum pib ntawm meiosis. Ib tug tswv cuab ntawm txhua khub los ntawm niam txiv (niam) thiab lwm tus los ntawm txiv neej niam txiv. Niam thiab txiv chromosomes hauv a homologous khub muaj tib cov noob ntawm tib loci, tab sis tej zaum txawv alleles.

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