Thaum twg monozygotic ntxaib tshwm sim?

Cov txheej txheem:

Thaum twg monozygotic ntxaib tshwm sim?
Thaum twg monozygotic ntxaib tshwm sim?

Video: Thaum twg monozygotic ntxaib tshwm sim?

Video: Thaum twg monozygotic ntxaib tshwm sim?
Video: Nyeem 1 Vaajntxwv 1-22 2024, Kaum ib hlis
Anonim

Monozygotic (MZ) ntxaib, tseem hu ua tus ntxaib zoo tib yam, tshwm sim thaum ib lub qe qe tau fertilized los ntawm ib leeg phev cell. Qhov tshwm sim zygote tau faib ua ob qho thaum ntxov hauv kev loj hlob, ua rau tsim ob lub embryos cais.

Lub embryo faib ua menyuam ntxaib nyob rau theem twg?

Zygotic splitting tshwm sim nruab nrab hnub ob thiab rau thaum lub zygote faib, feem ntau ua rau ob, thiab txhua zygote ces mus rau tsim mus rau hauv ib tug embryo, ua rau tib neeg ntxaib (los yog triplets yog tias nws faib ua peb). Cov no yog hu ua "monozygotic" ntxaib (los yog triplets).

Dab tsi ua rau cov menyuam ntxaib monozygotic?

Ib yam ntxaib tseem hu ua tus menyuam ntxaib monozygotic. Lawv tshwm sim los ntawm fertilization ntawm ib lub qe nrog ib tug phev. Thiab raws li cov hlwb sib faib thiab sib faib, qee lub sijhawm thaum ntxov ntawm kev loj hlob ntawm embryonic lawv faib ua ob tus neeg.

ob tug tub thiab tus ntxhais ua li cas?

Ntxhais-tub menyuam ntxaib tshwm sim thaum ib lub qe tau fertilized nrog X phev, thiab Y phev fertilizes lwm X qeQee zaum cov kws kho mob txheeb xyuas tib-poj niam txiv neej ntxaib li. fraternal los yog zoo tib yam raws li kev tshawb pom ntawm ultrasound lossis los ntawm kev tshuaj xyuas cov membranes thaum lub sij hawm xa khoom.

Yuav ua li cas yog poj niam los txiv neej tshaj plaws hauv ntxaib?

Dizygotic Twins thiab Tub los ntxhais

Ntawm no yog koj qhov txawv txav: Tus tub-ntxhais ntxaib yog hom menyuam ntxaib dizygotic tshaj plaws, tshwm sim 50% ntawm lub sijhawm. Ntxhais-ntxhais ntxaib yog qhov tshwm sim thib ob. Tub-tub ntxaib yog qhov tsawg tshaj plaws.

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