Video: Yuav ua li cas chromosomal txawv txav tshwm sim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus neeg muaj peb daim ntawv luam ntawm chromosome 21. Trisomy-18 (Edward's Syndrome) tshwm sim peb zaug hauv txhua 10,000 yug. Tus neeg muaj peb daim ntawv luam ntawm chromosome 18. Trisomy-13 (Patau's Syndrome) tshwm sim ob zaug hauv txhua 10,000 yug.
Tsis tas li ntawd, qhov muaj feem cuam tshuam ntawm chromosomal abnormalities yog dab tsi?
Thaum koj laus lawm, muaj ntau dua caij nyoog ntawm muaj me nyuam nrog tej yam chromosomal Cov xwm txheej, zoo li Down syndrome. Piv txwv li, thaum muaj hnub nyoog 35, koj muaj feem muaj me nyuam nrog a chromosomal mob yog 1 ntawm 192. Thaum muaj hnub nyoog 40, koj muaj feem yog 1o66.
Tsis tas li, koj tuaj yeem tiv thaiv chromosomal abnormalities li cas? Txo koj qhov kev pheej hmoo ntawm Chromosomal Abnormalities
- Mus ntsib kws kho mob peb lub hlis ua ntej koj sim xeeb tub.
- Noj ib qho vitamin prenatal ib hnub rau peb lub hlis ua ntej koj cev xeeb tub.
- Khaws txhua qhov kev mus ntsib koj tus kws kho mob.
- Noj cov zaub mov zoo.
- Pib ntawm lub cev hnyav.
- Tsis txhob haus luam yeeb lossis haus cawv.
Ib sab saum toj no, ua li cas chromosomal abnormalities tshwm sim?
Chromosome abnormalities feem ntau tshwm sim thaum muaj kev ua yuam kev hauv cell division. Muaj ob hom kev faib cell, mitosis thiab meiosis. Mitosis tshwm sim nyob rau hauv ob lub hlwb uas yog duplicates ntawm thawj cell. Ib lub cell nrog 46 chromosomes faib thiab ua ob lub hlwb nrog 46 chromosomes txhua.
Dab tsi ua rau chromosomal abnormalities nyob rau hauv thaum ntxov cev xeeb tub?
Chromosome abnormalities feem ntau tshwm sim vim ib los yog ntau tshaj ntawm cov no: yuam kev thaum Kev faib cov hlwb ntawm kev sib deev (meiosis) yuam kev thaum Kev faib tawm ntawm lwm cov hlwb (mitosis) raug rau cov khoom uas ua rau yug qhov tsis xws luag (Teratogens)
Pom zoo:
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo
Yuav ua li cas tshwm sim thaum lub zog tsis sib npaug ua rau ntawm ib qho khoom txav?
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Yuav ua li cas koj pom qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug?
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