RT Journal Article
SR Electronic
T1 Down's syndrome in twins of unlike sex.
JF Journal of Medical Genetics
JO J Med Genet
FD BMJ Publishing Group Ltd
SP 94
OP 96
DO 10.1136/jmg.20.2.94
VO 20
IS 2
A1 A Avni
A1 J Amir
A1 E Wilunsky
A1 M B Katznelson
A1 S H Reisner
YR 1983
UL http://jmg.bmj.com/content/20/2/94.abstract
AB The occurrence of Down's syndrome in both dizygotic twins appears to be very rare. A case of twins of unlike sex is reported, in which chromosomal analysis showed trisomy 21 in both of them, while the parental karyotypes were normal. This is the third reported case of such a constellation, and the second one in which infant and parental chromosomal analysis was done.