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kinship (en) ![]() | |
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Bayanai | |
Ƙaramin ɓangare na |
biological sibling (en) ![]() ![]() |
Bangare na |
twins (en) ![]() |
Tagwaye ko Yan biyu na nufin wadanda akayi rainon cikin su tare kuma aka haife su a tare. Ana samun tagwaye ne daga cikin halittu masu mama kuma masu hauhuwa.
[1][2][3] Yawancin tagwaye sunyi kama da junan su a ta fuska ko dabi'a koma duka biyun, sai dai akan samu wadanda basuyi wata kama ba, amma wannan ba kasafai ba.[4]
Ana samun tagwaye sosai a haife haifen da akeyi na Adam. A kasar Amurika an samu tagwaye daga kaso 9.4 zuwa 16.7 (18.8 zuwa 33.3 na tagwaye) daga cikin haihuwa 1000 da akeyi tsakanin shekarun 1980 da 2009.[5] Kabilar Yarbawa sune ke kan gaba wajen haihuwar tagwaye a duniya. Inda ake samun 90 zuwa 100 cikin haihuwa 1000,[6][7][8] an hakikance hakan na samuwa ne sakamakon cin Doya da ta zama babban abincin Yarbawa wanda ana samun sinadarai na samun tagwaye a cikin Doya.[9][10] In Central Africa, there are 18–30 twin sets (or 36–60 twins) per 1,000 live births.[11] a yankin nahiyar Amurika, Indiya, Bangladesh, Nepal da Kudu maso gabashin Asiya, nan ne ake samun mafi karanci na haihuwar tagwaye inda kawai kaso 6 zuwa 9 ake samu cikin haihuwa 1000. Arewacin Amurika da Turai kuwa ana samun tagwaye ne cikin kaso 9 zuwa 16 na haihuwa 1000.[11]
Mata wadanda a dangin su ana samun tagwaye suma sukan haifi tagwaye, kenan haihuwar tagwaye kan zamo gado amma ba kasafai ba.[12][13] Wasu dalilan da kan sanya haihuwar tagwaye sun hada da yanayin abinci da aiyukan Kimiyya.[14] Hakanan kuma wasu matan kan sha wasu magunguna da niyya domin haihuwar tagwaye.[15]
Ana samun haihuwar tagwaye a Dabbobi kamar Maguna, Tumaki, Karnuka, Shanu, Akuya da dai sauran su.
Unlike singleton gestation where identification of patients at risk for PTL is often difficult, every multiple gestation is at risk for PTL, so all patients can be managed as being at risk.