|MadSci Network: Genetics|
Dear Eva, Turner's syndrome is caused by complete or partial absense of one of the 2 x xhromosomes a female should have. Females with this syndrome do suffer from fertility problems. Women with this condition who want to conceive usually use a donor egg which is implanted into their own womb. If they don't have 2 normal X-chromosomes then about half of their eggs would definitely carry an abnormal X (if they had a partial x chromosome) or they may not get any eggs if the lack of an X interferes with meiosis. It is probable just less risky to use a donor egg incase of a problem with the females own. Why not have a look at this webpage and contact these people? http://www.turner-syndrome-us.org/ Hope this helps, Yvonne p.s. In a sense the syndrome is not heritable in the case of infertile females but if an egg was produced and it carried an abnormal X then the result would be the syndrome. However, since an egg only has half the parents chromosomes then if it got the good X it would be ok. I just don't know if the ladies are capable of producing eggs (you'd have to contact the society for that info). From what you wrote they must be able to produce healthy eggs from their normal X chromosome.
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