Iwe Unonyatsoziva Here Kana Mapatya Ako Akafanana kana Akasangana?
Mapatya ako akafanana kana ehama here? Une chokwadi here? Zvichida unenge uine chokwadi kana uchifunga nezvekucherechedza kwako, kana kuti zvichida wakatsanangurwa nachiremba wako panguva yekuzvitakura kana nguva pfupi mushure mekuberekwa. Asi chidzidzo chakawana kuti vanenge 15 kubva muzana yevabereki vakanga vasingazivikanwi pamusoro pezvygosity zvevana vavo mapatya. Muchikamu chikuru chezviitiko, vabereki vacho vakataura zvisina kururama kuti mapatya avo akafanana aiva ehama.
Izvozvo zvinoguma hazvisi zvachose zvinoshamisa. Pane zvakawanda zvisinganzwisisiki pamusoro pezygosity , uye kwete muvanhu vakawanda. Kunyange zvazvo vanhu vakawanda vakavhiringidzika pamusoro pemapatya akafanana uye ehama zvakadini, kunyange mamwe mapatya uye vabereki vavo havanzwisisi nheyo dze twintype. Uye zvakatowedzera ... vamwe vanachiremba vanokanganisa kugadzira mafungiro asina kururama pamusoro pekusiyanisa pakati pe monozygotic uye dizygotic twins.
Chii chinonzi Zygosity
Vanhu vazhinji vanoziva nemashoko akafanana uye ehama , anoshandiswa kurondedzera marudzi emawere. Vanofungidzira kuti mapatya anotarisa akafanana akafanana, uye mapatya asingazi hama. Asi mapepa akarudzika chaizvoizvo maitiro e zygosity uye anotsanangurwa nemaitiro mapatya akaumbwa, kwete neavo anotaridzika.
Monozygotic dzakawanda dzinoumba apo imwe yega inobereka inoparadzanisa, zvichiita kuti kuve nekukura kwemashure maviri kana kupfuura. Nemhaka yokuti inobva kune imwechete yemasero, vanhu ava vane DNA yakafanana uye kazhinji vane maitiro akafanana zvakafanana.
Ndicho chikonzero ivo vanozivikanwa sevakafanana mapatya. Asi kuratidzika hakusi kungobva pamitemo yemagene; zvakafanana mapatya hazvirevi kutarisa zvakafanana. (Tsvaga kuti sei mapatya akafanana akasiyana .)
Dizygotic kana kuti multizygotic multiples ndezvisikwa zvakasiyana-siyana zvinoitika apo mazai akawanda anogadzirwa uye anokura.
Mazita avo emadzinza akafanana nevana vemunin'ina, pamwe ne50% yeDNA yavo yakafanana. Vanogona kutarisa zvakafanana, nenzira imwecheteyo iyo vana vomunin'ina vanopikisana. Kana kuti, vanogona kutarisa zvakasiyana zvachose. Zvinowanzozivikanwa sehama dzakaberekwa kana dzakawanda.
Nzira Yokuziva Nayo Zvechokwadi
Nzira chete yekuziva kuti zygosity ndeyechokwadi ndeyekuongorora DNA. Monozygotic - kana zvakafanana - mapatya kana kuwanda achave ari mutsara wakakwana, asi dizygotic dzakawanda dzichaitika Asi kune mamwe maitiro akasiyana-siyana anogona kupa uchapupu hunogumira. Izvi zvinogona kuonekwa pane ultrasound panguva yekudzivirira, kana kuti kubudiswa nguva pfupi mushure mekubereka panguva yekuongororwa kweparcenta.
Munguva yepamuviri, mazai evha inobereka mukati mechibereko. Sezvo vhiki dzichifambira mberi, placenta inowedzera pamadziro echibereko cheamai kuti iwane fetus. Mukuwedzera, iyo fetus inowanikwa mune amnion , musaga wemvura. Monozygotic twins dzinogona kugovera placenta, kana kunyange amnion, zvichienderana neii paanoparadzaniswa mushure mekuberekwa. Izvo zvakatanga kuti zama inoparadzaniswa, vashoma vana vachabatanidzwa muchibereko; inenge 25 muzana yemonozygotic twins inokura muzvikwama zvakasiyana, ine mapaundi maviri. Asi kana mazai akaparadzana gare gare, pakati pemasere nemasere masere mushure mamuviri, vana vanogona kugoverana ne-placenta, chorion (kunze kwemberi ye amniotic sac) kana amnion (mukati membrane ye amniotic sac).
Dzimwe nguva inonzi ultrasound scan panguva yekuzvitakura inopa ruzivo rwekuti mapatya ari monozygotic kana dizygotic. Kana iri pachena kubva kune ultrasound kuti kune imwe chete, iyo inogona kugumiswa kuti ndeye monozygotic - yakafanana. Zvisinei, kuvapo kwemadziro maviri hazvirevi kubvumirana; zvose monozygotic twins uye dizygotic twins zvinogona kuratidza nemapentcentas maviri. Zvinosuruvarisa, vanachiremba vakawanda vanofungidzira zvisiri izvo kuti malascenta maviri anoratidza dizygotic twins. Chidzidzo che2004 chakawana kuti vanopfuura 80% vechiremba vakatenda kuti mapatya ane mapapiro maviri aiva hama. Vabereki vanofunga kuti mapatya avo ari hama dzakagadzirirwa pamhando iyi yemashoko asina kukanganisa kubva kune avo vanopa kurapa vangangodaro vasina kuudzwa.
Chikonzero Nei Zvine Basa
Kune vanhu vakawanda, kusarudza zygosity inongova nyaya yekugutsa kufarira. Mababa mapfumbamwe angave achida kusimbisa mavambo avo, kana vabereki vangada kupa mhinduro yakarurama kumubvunzo unowanikwa. Asi mune dzimwe nguva, kusimbisa zygosity kunogona kujekesa mune zvezvoutano, zvakadai sechiitiko chechigunwe kana chekuisa.