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#2 (permalink) |
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I did a search of FT for the term and found this one reference.
Boy/Girl Identicals? There has been very rare cases (about 3 I have found), of opposite sex identical twins because of genetic abnormality. In these rare cases, identical boys would be conceived and one twin, during the twinning process, loses a Y chromosome (boys have chromosome type XY while girls have XX), creating a girl by default, but a girl with only one X chromosome (chromosome type XO). The girl will suffer from Turner's Syndrome, which is distinguishable by their short stature, folds of skin at the neck, abnormal development of secondary sexual characteristics, an intellectual deficit known as space-form blindness. The male co-twin would be unaffected. Turner's syndrome can occur in any birth, even that of fraternal female twins, or identical female twins. It also occurs in single births, so an individual with Turner's syndrome is not automatically a twin. Turner's Syndrome occurs in about 1 in 10,000 of all births. The actual thread link is: http://www3.fertilethoughts.com/foru...rners+syndrome Didn't see it referenced anywhere else. Have you tried an internet search like on Google? Sometimes you can find sites that have discussion groups (I just did that with my dd) on various syndromes. Sorry I couldn't be more help! Diana |
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