Video: Nws txhais li cas yog tias tus menyuam tsis muaj chromosome?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj ib daim qauv ntawm ib qho tshwj xeeb chromosome , ntau dua li ib txwm khub, hu ua "monosomy." Turner syndrome tseem hu ua "monosomy X." Cov ploj lawm poj niam deev chromosome yuam kev tuaj yeem tshwm sim hauv leej niam lub qe qe lossis leej txiv lub phev cell; Txawm li cas los xij, feem ntau nws yog qhov yuam kev uas tshwm sim thaum txiv phev
Tib neeg kuj nug, yuav ua li cas yog tias koj ploj lawm chromosome?
Tab sis yog meiosis tsis tshwm sim nquag, me nyuam muaj muaj ib qho ntxiv chromosome (trisomy), los yog muaj a tsis muaj chromosome (monosomy). Cov teeb meem no ua tau ua rau poob cev xeeb tub. Los yog lawv ua tau ua rau muaj teeb meem kev noj qab haus huv hauv tus menyuam. Ib tug poj niam hnub nyoog 35 xyoos lossis tshaj saud yog qhov muaj feem yuav muaj menyuam nrog ib tug chromosomal kev txawv txav.
Qhov thib ob, nws txhais li cas thaum tus menyuam yug los nrog chromosome ntxiv? Ib "trisomy" txhais tau tias tias cov tus me nyuam muaj ib ntxiv chromosome nyob rau hauv ib co los yog tag nrho ntawm lub cev lub hlwb. Nyob rau hauv cov ntaub ntawv ntawm trisomy 18, lub tus me nyuam muaj peb daim ntawv luam ntawm chromosome 18. Qhov no ua rau ntau tus tus me nyuam lub cev los tsim kom muaj kev txawv txav.
Tom qab ntawd, yuav ua li cas thiaj muaj tus me nyuam nrog chromosomal abnormalities?
Kev pheej hmoo rau chromosome txawv txav los ntawm niam hnub nyoog The muaj feem muaj menyuam cuam tshuam los ntawm Down syndrome nce los ntawm kwv yees li 1 ntawm 1, 250 rau ib tug poj niam uas xeeb tub thaum muaj hnub nyoog 25, txog li 1 ntawm 100 rau tus poj niam uas xeeb tub thaum muaj hnub nyoog 40.
XYY syndrome yog dab tsi?
XYY Syndrome yog ib hom kab mob caj ces uas tus txiv neej muaj ib qho ntxiv Y chromosome. Cov tsos mob feem ntau tsis tshua muaj. Tej zaum lawv yuav suav nrog qhov siab dua qhov nruab nrab, pob txuv, thiab muaj kev pheej hmoo ntawm kev kawm txog teeb meem. Muaj 47 chromosomes, es tsis txhob ntawm ib txwm 46, muab 47, XYY karyotype.
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