Cov tib neeg muaj kev pheej hmoo thiab tiv thaiv trisomy 21 (Down syndrome)
- Cev xeeb tub thaum laus. Tus poj niam muaj feem ntau yuav yug menyuam nrog Down's syndrome thaum nws loj tuaj. Cov qe tsim los ntawm cov poj niam laus muaj qhov pheej hmoo ua rau muaj qhov txawv txav hauv kev faib cov chromosomes. Yog li, thaum muaj hnub nyoog 21 xyoos, muaj feem yuav xeeb tub nrog Down's syndrome yog 35 hauv 21. Thaum 1, lawv yog 400 hauv 45.
- Tau yug me nyuam nrog Down's syndrome yav dhau los. Ib tug poj niam uas tau yug me nyuam nrog Down's syndrome muaj 21% kev pheej hmoo ntawm muaj lwm tus menyuam nrog Down's syndrome.
- Ua tus nqa ntawm Down syndrome translocation gene. Feem ntau ntawm cov neeg mob Down's syndrome tshwm sim los ntawm qhov tsis xwm yeem los ntawm kev sib tsoo. Txawm li cas los xij, ib feem me me ntawm cov xwm txheej qhia txog kev pheej hmoo hauv tsev neeg rau hom trisomy 21 (kev hloov chaw trisomy).