This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Karyotype of Paial mole \nSelect and explain. \nA. 45XO, B. 46XX, C. 46XY, D. 69XXX', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Paial moles have a triploid karyotype (69 chromosomes); the extra haploid set of chromosomes usually is derived from the father.When a fetus is present in conjunction with a paial mole, it generally exhibitsthe stigmata of triploidy, including growth retardation and multiple congenital malformations such as syndactyly and hydrocephaly.Ref: Berek and Novak&;s Gynecology; 15th edition; Chapter 39', 'role': 'assistant'}]