Abantwana abazalwa ngokukhulelwa okuphindwe kabini kuthiwa amawele okanye amawele (ezintathu). Kwaye kukho iindlela ezimbini zophuhliso lokukhulelwa ngamawele: ii-dizygotic (ii-twin-side) kunye namawele afanayo.
Uwuphi umehluko phakathi kwamawele kunye namawele?
Kwimeko yeamawele aphindwe kabini, ibhinqa likhula ngoxa linye okanye ngaphezulu kwe- ova kwelinye okanye kumabini amaqanda, okwamva ngokuphumelelayo. Ngamanye amaxesha ixesha lokukhulelwa kwazo lihluke kwiiyure eziliqela okanye kwimihla. Abantwana abazalelwe bangaba nesini esifanayo okanye babe ngabesini ezahlukeneyo. Ngokwenza njalo, banamalungu abo ngabanye ama-chromosomes, ngoko ke bahlala bengakhange bajonge kakhulu, nangona kukho ukufana okungaqinisekanga.
Ngamawele e-monozygotic (odnoyaytsevymi), imeko yile ndlela ilandelayo: Iqanda elinye linyanzelwa ngenye ye-spermatozoon. Emva koko, i-zygote ihlulwe ngamabhabusi ahlukeneyo ahlukeneyo, ahlakulela aze akhule abe iintsana ezimbini ezinomdla. Ngexesha elifanayo njengesiphumo sokukhulelwa, amakhwenkwe ahlala azalwa, ayenayo iikopi ezithile.
Iingxaki zokuphuhliswa kwamawele (amawele)
Phakathi kwezinye iimeko ezinzima zokukhulelwa okubanzi kukuphuhliswa kwamawele. Amawele ahlukeneyo kukulibaziseka ekukhuleni kwesinye seziqhamo. Okokuthi, enye yabantwana ikhula kangcono, icinezele yesibini. Inketho eyona yingozi kakhulu xa amawele athile afunyenwe kunye nesondlo esisodwa. Kule meko, ubomi babantwana babini basengozini.
Olunye uhlobo lweengxaki zintonga zamaSaam. Olu hlobo lamamawele alinamawele afanayo, ahlangane. Isizathu salesi siqalo ngokuhlukana ngokungenakukhawuleza kwe-zygote kwiifomu ezizimeleyo ezi-2. Ngethamsanqa, le nzekayo ivela kwimeko eli-1 kwi-10 yezigidi.