Kaviri inofadza kaviri amai. Zvisinei, pamuviri nemapatya zvinogona kuva nezvimwe zvinhu uye kunyange zvinetso, uye zvakawanda zvaro zvinoenderana nokuti kana mapatya acho anokonzera kuparadzana kweimwe zygote muvhiki yechipiri yekuzvitakura, kana kuti zvichava nezvekudyarwa kwamazai maviri akazvimirira kana kuparadzana kwokutanga.
Mitambo yemapatya
Mapatya ane marudzi mana makuru anogona kubuda semugumisiro wemhando dzakasiyana-siyana dzekuberekwa. Mhando yakasiyana yekutanga yemumimba, iyo ine chinyorwa chimwe chete, ndiyo yekugadzirira maawa maviri panguva imwe chete. Somugumisiro, bichorial twine diamiotic twakazvarwa, iyo ine zvidimbu zvakasiyana-siyana uye zvinyorwa zvakasiyana (zvinowanikwa munzvimbo dzakasiyana-siyana uye mune ameniotic akasiyana mabhasi). Vana vakadaro vanogona kuva nevakadzi vakasiyana uye kutarisa kwakasiyana.
Mukuwedzera, pane imwe shanduro yekuita pamuviri. Mumuviri waamai, chigovera chimwe chete chinogadzirwa, chinosarudzwa nemumwe chirwere chinonzi spermatozoon, asi semagumisiro ekuparadzanisa inoita mazai maviri akazara kamwechete. Zvichienderana nezuva iro kupatsanurwa kuri kuitika, chimwe chemarudzi matatu emapatya anoumbwa. Vanogona kunge vane chorion yakasiyana uye omnion, asi chete kana kupatsana kuchiitika chaizvoizvo mumaawa ekutanga 48-72 mushure mekuberekwa. Kana kubata pamuviri kuchiitika gare gare, vangave vane chorion yakafanana uye mairioni akasiyana kana chorion yavanojaira uye omnion yakawanda. Mumaawa maviri ekupedzisira, mapatya aya anonzi anoramba odnoyaytsevymi, ivo vanofanira kunge vari evanhukadzi mumwechete uye vachafanana kune madonhwe maviri emvura, kwete chete kunze, asiwo sechromosomes.
Bihorial twins
Nyanzvi dzinofunga kuti ibhiamnotic twins nokuda kwehutano hwaamai, pamwe chete nemababa pachavo, iyo ndiyo yakasiyana-siyana yakasiyana yekugadzirwa kwezviitiko. Nenguva dzose, inotora anenge 25-30% yehuwandu hwemawele. Vana vaduku vanokura zvakasiyana kubva kune mumwe, vanodya kubva kune imwe nzvimbo yepamusoro, uye saka zviri nani zvakapiwa nezvinhu zvose zvinodiwa pakukura uye kubudirira. Mababa akadaro anowanzova nehope shomanene muhutano uye anozvarwa anenge azere. Vane nguva shomanana yekukura kwekunakidza uye zvinetso zvishomanana munguva yekuita gumbo.
Mukuwedzera, kuberekwa kwakadaro kune ngozi yakawanda yezvinetso zveamai. Mune zvimwe zviitiko, kana vana vose vakanyarara zvakanaka, nyanzvi dzinogona kubvumira amai kuti vabereke ivo pachavo, dzimwe nguva zvinowanzoitika kuti vana vanozvarwa kunyange nekusiyana kwemazuva mazhinji. Ichokwadi kuti vana vaduku vaviri vamamai vane mutoro mukuru, asiwo mufaro mukuru. Sezvo mutemo, kuberekwa kwekaviri dichorial kunotora nhaka, naizvozvo kana amai vari mumhuri vakatova nemapatya, ipapo mukana wekuti anotakura dichoric twins yakawedzerwa. Monochorionic twins inogona kuonekwa mumhuri ipi neipi uye inongoraramira chete munzira yekuparadzaniswa kwevana. Zvimwe zvinhu zvinotamba zvishoma basa pano.
Kuti uone kuti ndivanaani vari dichoric kana monochorionic, inogona kuitwa pane chidzidzo chinokosha, somuenzaniso, panguva yecharionic kana amniocentesis biopsy. Pamusoro pekushandiswa kwe-ultrasound, tsvaga mubvunzo uyu
Mazuva ano, nyanzvi dzinonyatsoziva kuti rudzi rwemapatya chii, runogona kugadzirisa pane nyanzvi ye ultrasound, iyo amai vechipamende inowedzera kana isina kuroorwa, uye zvakare kutaura pamusoro pekuti vana vanokura sei kana vane matambudziko mukukura. Kana zvichidiwa, Amai vanogona kugoverwa madhiragi anotsigira, izvo zvichamubatsira kutaura kune vose vana.