Rudzi rutsva rwekunamatira rwakaratidzwa nemasayendisiti muna 2007. Vakashandisa izwi rokuti Semi-Identical Twinning mumushumo wakabudiswa mu Journal of Human Genetics muna 2007. Chidzidzo chacho chakanga chakavakirwa kune rimwe risingazivikanwe remapatya, rinotsanangurwa seimwe nzvimbo pakati pezvakafanana uye zvehama (inonziwo monozygotic kana dizygotic ). Vakatsunga kuti mababa akanga akafanana padivi raamai asi kugovana hafu yevana vavo mazamu.
Aya mapatya asingawanzo anotenda kuti akabudirira apo mbeu mbiri dzakasunga dhi rimwe chete, dzichiita hutatu, hunozoparadzana. Kusiyana neizvi, zvakafanana (monozygotic) mapatya anogadzira apo imwe yega inobereka inoparadzaniswa kuva mbiri; fraternal (dizygotic) mapatya akaumbwa nemazai maviri akasiyana akabatanidzwa nemaviri maviri evanhu. Zvisinei, munyaya iyi yekunamatira kwakasiyana-siyana, mbeu mbiri dzakasunga dhi rimwe rinoparadzana kuva maviri. Zvine ruzivo, mapatya ane zvizvarwa zvakafanana zvechikadzi, asi anongoda 50% zvemazana edzimba dzavo, zvakafanana neavizygotic mapatya kana vana vomumba.
Tsanangudzo pamusoro pemapatya aya haana kuziviswa, kunze kwekuti vakaberekerwa muUnited States, zvichida pakati pe2000. Vakagamuchirwa pasina rubatsiro rwekubereka uye mapatya maviri akaoneka achivandudzwa.
Vatsvakurudzi vakacherechedza kuti rudzi urwu rwemajaya rwakanga rusingawanzoitiki. Imwe nyanzvi yepaininning yakataura kuti yakanga isingambofungidzire kuti imwe yakagadzikana yemapatya akafanana aizomboonekwa.
Muchiitiko ichi, mapatya akauya kumutsvakurudzi kunyatsoteerera apo Twin A yakaonekwa seyechokwadi yehamaphrodite ine maitiro emhando dzisina kufanira, dzine maviri eesvory uye testicular. Chirwere chemuviri chinorondedzerwa seumwe munhu umo nhengo dzomurume nemukadzi dzinobereka dziripo mumuviri. Zvisinei, Twin B inotomically murume.
Zvinokonzera Icho Chinyorwa Chekutsvaga
Vatsvakurudzi vakanga vasina kunyatsonyatsoziva kuti chii chakakonzera rudzi urwu rwekunamatira, kufanana nemamonning e monozygotic asiri chinhu chisingazivikanwi. Imwe nyanzvi yakaratidza kuti zamai masero akaparadzaniswa, asi vasati vaparadzanisa, sero rimwe nerimwe raifunganidzwa nehupenyu hwakasiyana-siyana, huchitsvaira majee asati aparadzana zvakakwana. Zvichida, maviri maviri akasiyana-siyana akaberekwa mazai rimwe chete, rudzi rweviri huwandu, uye kuti egg inoparadzaniswa.
Nyanzvi yezvinyorwa Michael Golubovsky yakaratidza pfungwa yemhando iyi yekupinza muchidzidzo che2002. Akataura kuti izwi rokuti sesquizygotic rinogona kurondedzera mapatya anokonzerwa neku "kubatanidzwa kwemashoko maviri evanhu mumushonga wezviviri zvezvigadzirwa zvevakadzi," "zvakasiyana pakati" pakati pe monozygotic uye dizygotic twins.
Kunobva:
Golubovsky, M. "Baba vemhuri twinning: hypothesis uye maitiro ezvibhedheni / zvezvechiremba." Twin tsvakurudzo: Official Journal ye International Society of Twin Studies , April 2002, p. 75.
Souter, VL, et al. "Nyaya yechokwadi hermaphroditism inoratidzira nzira isingawanzoiti yekupa twinning." Human Genetics , April 2007, p. 179.
Whitfield, John. "Masvikiro asina kufanana akawanikwa" Nyama , Yakasvika munaNovember 29, 2015. http://www.nature.com/news/2007/070326/full/news070326-1.html