Copiii au ca mama biologica o fiinta care nu s-a nascut
„Nu ne puteam explica fenomenul in nici un fel”, spune doctorul Margot Kruskall, de la un spital din Boston. „Pacienta insa a respins cu fermitate ipoteza. Atunci, ne-a trecut prin cap ca cei doi copii fusesera conceputi folosind sperma tatalui si ovule de la sora pacientei. si asta pentru ca, desi ADN-ul era diferit, existau asemanari ale informatiilor genetice care sa ne conduca la concluzia ca exista totusi o legatura in familie”, a adaugat medicul. Jane a negat ca ar fi avut vreo sora.
O examinare medicala sofisticata a dus la concluzia ca ovarele femeii, ca si alte organe interne, aveau ADN diferit. Acest lucru este posibil numai daca in uterul mamei fusesera doi embrioni care, dupa dezvoltarea organelor reproducatoare, au fuzionat, ducand, in final, la aparitia pe lume a unui singur bebelus.
In lume se stie de existenta a mai putin de 30 de astfel de cazuri de-a lungul timpului, numite de medici „himere”, dar acum, datorita dezvoltarii tehnicii, este prima data cand a fost posibil sa se faca analize medicale amanuntite.
Cum se explica fenomenul
Mama lui Jane a fost insarcinata cu gemeni neidentici
in primul trimestru al sarcinii, cei doi embrioni au fuzionat, formand unul singur, perfect normal
S-a nascut o fata numita Jane
Jane ajunge la maturitate si da nastere la trei baieti
in urma unor analize medicale se descopera ca doi din cei trei fii ai lui Jane aveau informatii genetice diferite de cele ale mamei, in timp ce al treilea fiu avea ADN-ul identic cu al lui Jane
Mai tarziu, femeia afla ca organismul ei are doua seturi diferite de ADN, cate unul de la cei doi embrioni care fuzionasera in uterul mamei
Doi din baietii lui Jane au mostenit informatia genetica de la sora geamana „moarta”. Acesta este motivul pentru care ADN-ul lor nu corespundea cu cel al lui Jane
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