Amai, avo vanotarisira mapatya, vanogara vachifarira kana vana vavo vachatarisa semadonhwe emvura maviri kana sehama ine hama kana sehanzvadzi nehanzvadzi. Zvisingatauri, hapana chiremba anogona kutaura, asi kana zvakakwanira kusimbisa chaizvo kuti rudzi rwemapatya amai vanopfeka, zvinenge zvichibvira kutora nepamusoro zvakanyanya kuti chii chaizvoizvo vana vachaita sekunze.
Kune mhando mbiri dzemapatya, ayo akazoparadzaniswa kuva subspecies anoverengeka:
- monozygotic twins;
- dizygotic twins.
Monozygotic mapatya ndiwo embryo akazotevera mushure mekuparadzaniswa kweii rimwe. Zvichienderana nezvenguva yekuparadzana, monozygotic: bihorionic, biamnotic, daimniotic uye dichoric inosiyaniswa. Sezvo mutemo, monozygotic mapatya ndewemurume mumwe chete uye akafanana zvikuru kune mumwe nemumwe.
Dizygotic twins ihama dzakanaka mapatya. Vana vakadaro vanokura mumwe nomumwe muhomwe yavo, uye mumwe nomumwe anodya pamapapiro ayo. Vanogona kuva imwechete-zvepabonde kana yepabonde. Uyewo zvinogona kunge zvakasiyana zvachose kusvika kumeso emaziso nemvere.
Mhando dze monozygotic twins
Monochorionic diamial twins - rudzi urwu rwemapatya ndiyo yakanyanya kufanana nemapatya akafanana. Iyi mapatya inoumbwa mumazuva 4-8 mushure mekuberekwa kweii, asi kusvika panguva iyo zygote inoshandiswa. Monochorion zvinoreva kuti awa mapatya anodyiswa kubva kune imwe placenta panguva yekuzvitakura . Iyi mamiriro ezvinhu akaipisisa kupfuura iyo shanduro yemapatya, apo imwe nheche inenge iine mavara. Mwana akasimba anodzivisa kufambiswa kwehanzvadzi kana hanzvadzi yake, ndicho chikonzero nei vana vakadaro vanoberekerwa vane musiyano muhupamhi hwe 500 gramu. Diamondial twins zvinoreva kuti buri fetus inokura uye inokura mu fetal sac yayo, asi amniotic fluid kubva kune imwe haigoni kune imwe. Rudzi urwu rwemapatya anonzi - akafanana mapatya, achabva ehutano mumwechete uye akafanana zvikuru kune mumwe nemumwe.
Monochorion biamnotic twins yakafanana nemonochorionic diamial twins-iyo yakawanda placenta, asi imwe neimwe mu sac.
Monochorion mono-amniotic twins - rudzi urwu rwemapatya ndirwo rune ngozi zvikuru. Kuparadzana kunoitika pakati pemasere nemasere gumi kubva pamasere, panguva iyo blastocyst inowanikwa mu endometrium. Mazai maviri aya ari mune imwechete amniotic sac uye anodyiwa kubva kune imwe nzvimbo. Mapatya akadai akabva kune imwe bere, uye zviri pachena kuti ivo vachava neropa rimwechete, zvepabonde uye chromosome yakagadzirirwa. Vana vakadaro vachave vakaoma kunzwisisa kunyange vabereki vavo.
Dambudziko nderokuti mumwe mwana angangodaro akabatanidzwa mumutsara wembilical wechipiri, uye panogona kunge kune zvimwe zvakasiyana siyana zvakasiyana.
Muchiitiko apo kupatsanurwa kweii kunoitika mushure mezuva re13 kubva pakubereka, kuparadzana kwakakwana hazviitike kuitika. Chiedza chinogona kuonekwa maSaama mawere, akabatanidzwa nechikamu chipi nechipi chemuviri.
Kuoma kwemakumbo akawanda
Sezvo mutemo, huwandu hwepamuviri hunoenderera mberi humwe hunyanya kuoma kupfuura kubata pamuviri we singleton. Muchiitiko ichi, monochorionic twins, in
Muzvimwe zviitiko, kupfeka varume vaviri vapenyu pasi pemwoyo panguva imwechete iro iropafadzo huru uye kukudzwa kwaamai. Uye mazamu akawanda akaenzana ane utano, avo vakatotanga kuberekwa, kupa tariro kuna amai vose vari kumirira mapatya.