Video: Dab tsi yog pawg chromosomes hu ua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub cev hlwb xws li cov leeg nqaij, nqaij tawv nqaij thiab lwm yam. Cov hlwb no muaj tag nrho teeb ntawm chromosomes (46 hauv tib neeg), yog hu ua Diploid. Cov hlwb sib deev: Nws kuj yog lub npe hu ua gametes. Cov hlwb no muaj ib nrab ntawm tus naj npawb ntawm chromosomes raws li lub cev hlwb, yog hu ua Haploid.
Hauv qhov no, dab tsi yog pawg chromosomes?
Teeb ntawm chromosome . Lub sij hawm " teeb ntawm chromosome " hais txog tus lej ploidy. Ib haploid muaj ib qho teeb ntawm chromosome , ib tug diploid muaj ob pawg ntawm chromosomes , ib hexaploid muaj rau pawg ntawm chromosomes . Hauv tib neeg, txhua tus teeb ntawm chromosome yog ua los ntawm 23 chromosomes (22 autosomes thiab 1 poj niam txiv neej chromosome ).
Tsis tas li ntawd, vim li cas tsuas muaj 23 chromosomes hauv gametes? Vim txhua tus chromosome muaj ib khub, cov hlwb no hu ua "diploid" hlwb. Ntawm qhov tod tes, tib neeg phev thiab qe qe muaj tsuas yog 23 chromosomes , los yog ib nrab chromosomes ntawm diploid cell. Yog li, lawv hu ua "haploid" hlwb.
Dhau li ntawm no, dab tsi yog ib pawg chromosomes hu ua?
haploid. Haploid piav qhia a cell uas muaj ib txheej ntawm chromosomes . Lub sij hawm haploid kuj tuaj yeem xa mus rau tus lej ntawm chromosomes nyob rau hauv qe los yog phev hlwb, uas kuj yog hu ua gametes. Tus naj npawb ntawm chromosomes hauv ib set yog sawv cev li n, uas kuj yog hu ua tus naj npawb haploid.
Lub sij hawm rau muaj tag nrho cov chromosome yog dab tsi?
Qhov xwm txheej uas a tag nrho teeb ntawm haploid chromosomes tam sim no hu ua euployy. Yog li, cov lub sij hawm muab rau cov muaj nyob ntawm a tag nrho cov chromosomes yog euploid.
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