Tab sis tsis yog, cov menyuam ntxaib sib koom nrog txawv txiv tsis tau Tab sis qee yam nyob ze ntawm qhov no tsuas yog yuav yog. Thaum cov menyuam ntxaib ntawm qhov tsis zoo tsis tuaj yeem ua ke, lawv tuaj yeem dhau los ua ib yam dab tsi hu ua chimeras. Nov yog qhov uas cov kwv tij ntxaib sib txuas ua ke thaum ntxov ntawm kev txhim kho.
Cov menyuam ntxaib sib koom ua ke monozygotic lossis dizygotic?
Cov menyuam ntxaib sib koom yog ib qho tsis tshua muaj daim ntawv ntawm cov menyuam ntxaib monoamniotic, tshwm sim hauv kwv yees li 1 ntawm 50,000 cev xeeb tub. Lawv tshwm sim thaum cov menyuam ntxaib monozygotic tsis cais ua ob tus neeg. Kev kuaj mob yog ua nrog ultrasound imaging.
Cov menyuam ntxaib sib txuas zoo ib yam lossis kwv tij?
Cov menyuam ntxaib sib koom ua ke- lawv yog tib tug poj niam. Cov kws tshawb fawb ntseeg tias cov menyuam ntxaib sib koom ua ke tsim los ntawm ib lub qe fertilized uas tsis cais tag nrho thaum nws faib. Lo lus "Siamese ntxaib" pib nrog Eng thiab Chang Bunker, ib txheej ntawm cov menyuam ntxaib uas tau yug hauv Siam (tam sim no Thaib) xyoo 1811.
Niam ntxaib dizygotic?
Vim yog kwv tij, los yog dizygotic, ntxaib yog 2 cais qe fertilized, lawv feem ntau tsim 2 cais amniotic hnab, placentas, thiab txhawb nqa. Zoo tib yam, los yog monozygotic, cov menyuam ntxaib yuav los yog tsis sib koom tib lub hnab amniotic, nyob ntawm seb lub qe fertilized thaum ntxov muab faib ua 2.
Tib ntxaib sib koom sib cais?
Kwv yees li 75 feem pua ntawm cov menyuam ntxaib sib koom ua ke tau koom nrog tsawg kawg ib feem ntawm lub hauv siab thiab muab cov khoom nruab nrog cev rau ib leeg. Yog tias lawv muaj cov kab mob sib cais, txoj hauv kev rau kev phais thiab kev ciaj sia muaj ntau dua yog tias lawv koom tib lub cev. Raws li txoj cai, sib koom lub siab sib koom ntxaib tsis tuaj yeem sib cais
