Trisomy 18 tshwm sim li cas hauv meiosis?
Trisomy 18 tshwm sim li cas hauv meiosis?

Video: Trisomy 18 tshwm sim li cas hauv meiosis?

Video: Trisomy 18 tshwm sim li cas hauv meiosis?
Video: Tiffany Miller - Baby Diagnosed with Trisomy-18 2024, Kaum ib hlis
Anonim

Trisomy 18 ua rau muaj teeb meem loj hlob hauv utero. Lub xub ntiag ntawm ib qho ntxiv ntawm chromosome 18 yog ib qho genetic anomaly uas tshwm sim thaum lub sij hawm tsim cov phev thiab qe hlwb nyob rau hauv ob qho tib si meiosis Kuv, los yog ntau dua meiosis II. Txhua chromosome duplicates thiab faib ua ob tug ntxhais.

Kuj nug, dab tsi yog qhov ua rau trisomy 18?

Ua rau . Feem ntau, trisomy 18 yog ua rau los ntawm muaj 3 daim ntawv ntawm chromosome 18 nyob rau hauv txhua lub cell nyob rau hauv lub cev, es tsis txhob ntawm ib txwm 2 daim ntawv. Cov khoom siv caj ces ntxiv los ntawm daim ntawv thib 3 ntawm chromosome cuam tshuam kev loj hlob, ua rau cov cim qhia thiab cov tsos mob ntawm tus mob.

Qhov thib ob, puas trisomy 18 qhia ntawm ultrasound? Chromosome teeb meem xws li trisomy 13 lub 18 ka feem ntau yuav kuaj tau ua ntej yug. Qhov no yog ua los ntawm kev saib cov hlwb hauv cov kua amniotic lossis los ntawm cov placenta. Fetal ultrasound thaum cev xeeb tub ua tau kuj ua yeeb yam qhov ua tau trisomy 13 lub 18 . Tab sis ultrasound tsis yog 100% tseeb.

Tsis tas li ntawd, trisomy 18 nyob qhov twg?

Theextra chromosome yog nyob rau hauv txhua lub cell ntawm tus me nyuam lub cev. Qhov no yog nyob deb ntawm ntau hom trisomy 18 . Ib nrab trisomy 18 . Tus me nyuam tsuas muaj ib feem ntawm ib qho ntxiv chromosome 18 . Ib qho ntxiv tuaj yeem txuas rau lwm qhov chromosome nyob rau hauv lub qe los yog phev (hu ua translocation).

Leej twg yog tus neeg laus tshaj plaws nrog Trisomy 18?

Donnie Heaton

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