Garcia-Sagredo J M, Merello-Godino C, San Roman C
J Med Genet. 1977 Jun;14(3):226-8. doi: 10.1136/jmg.14.3.226.
We present a pair of dizygotic twins with different abnormal karyotypes. The chromosome anomaly is a sexual aneuploidy in both cases: 48,XXXXY in one, 47,XXY in the second. The origin of the chromosomal anomaly and the hypothetical relation between sexual aneuploidy and twinning is discussed. It is concluded that further studies in twins are necessary to prove the not yet solved problems of non-disjunction and double ovulation.
我们报告了一对具有不同异常核型的双卵双胞胎。在这两个病例中,染色体异常均为性染色体非整倍体:一例为48,XXXXY,另一例为47,XXY。本文讨论了染色体异常的起源以及性染色体非整倍体与双胎妊娠之间的假设关系。得出的结论是,有必要对双胞胎进行进一步研究,以证实尚未解决的不分离和双排卵问题。