Monozigotik ve dizigotik ikizlerin A,B,O ve Rh kan grupları ile kalıtsallık durumu arasındaki ilişkisinin incelenmesi

Abstract

Twinning rate was hiqher ( V. 73,5) in non- re latives while it was lower in consanquinous parents. The twinninq probability was (7.82,3) in those who had twinning in paternal Qeneration, while it was (7.82,2) in those whit twinninq in maternal qeneration. A pediqree of twins for three qeneration revea led that 32 of 34 twin pairs had twinninq of maternal paternal or both qenerat ions, at least once per qenera tion suqqestinq an autosomal dominant inheritance. In twin population A and B blood groups were predominant ( 7.70 ), in contrast with the dominance of 0 qroup in Turkish population. q roup A larqelv accounted for this difference. We have not encountered B Rh(~5 and 0 Rh(-) blood qroups in twin population. Dermatoqlyphic patterns showed that to` pattern was mast frequent in monozvoot ic twins, where as RL oattern was not seen, the UL pattern, most frequent lv seen in qeneral papulation was of seconderv freauencv in twins, In dizygotic twins the most frn-auent pattern was ULs W was the second and A third most freouentlv seen pattern.ii If was concluded that tw inn i no is d i recti v re la - ted with maternal aoe birth order and ancestral historv of twinnincu Dermatoalvph ic patterns of dizvootic twins are similar to those in General ooDulat ion. whi 1© W oat- tern is predominant in manozvqatic twins» We have not encountered B Rh<--) and Q Rh(-) blood arouos in twins; and we have observed relations between twinninq and blood groups»Twinning rate was hiqher ( V. 73,5) in non- re latives while it was lower in consanquinous parents. The twinninq probability was (7.82,3) in those who had twinning in paternal Qeneration, while it was (7.82,2) in those whit twinninq in maternal qeneration. A pediqree of twins for three qeneration revea led that 32 of 34 twin pairs had twinninq of maternal paternal or both qenerat ions, at least once per qenera tion suqqestinq an autosomal dominant inheritance. In twin population A and B blood groups were predominant ( 7.70 ), in contrast with the dominance of 0 qroup in Turkish population. q roup A larqelv accounted for this difference. We have not encountered B Rh(~5 and 0 Rh(-) blood qroups in twin population. Dermatoqlyphic patterns showed that to` pattern was mast frequent in monozvoot ic twins, where as RL oattern was not seen, the UL pattern, most frequent lv seen in qeneral papulation was of seconderv freauencv in twins, In dizygotic twins the most frn-auent pattern was ULs W was the second and A third most freouentlv seen pattern.

5`3 3UMMARY A SEARCH FOR AN ASSDCIATION BETMEEN ABQ BLOOD SROUPS AND MONOZYGOTIC AND DIZYGOTIC TWINS. Amana 104 twins 34 wsre selected accordincı to the fallawincj formulaî Nta_ p q cftN-lH C t* pq) Twins were identfied as man 02 y qo t i c and dizycıo- t iç accordincı to physical similarites and by usancı ma¬ jör eriteria such as blood qroups and dermatoalyphics. Fi ve of 34 pairs were manozycıotic a.nü 29 were dizyqotic. Four of monozvqotic twin oairs female and öne was male.Mine of disyaotic twin oairs were female where eiqht were male and twelve we>re maile and female Bibi incıs. Maternal birth aae af 20 af 30 twins var i ed between 20-29 and onlv ane t^in pair had a maternal aqe abave 40.A search of birth orcler shovecl that in 18 of 34 twin births the number of parity was thrse ör more the incidence beinq hiqher in multipars, in comparison with unipars in the same aqe oroup»Twinning rate was hiqher ( V. 73,5) in non- re latives while it was lower in consanquinous parents. The twinninq probability was (7.82,3) in those who had twinning in paternal Qeneration, while it was (7.82,2) in those whit twinninq in maternal qeneration. A pediqree of twins for three qeneration revea led that 32 of 34 twin pairs had twinninq of maternal paternal or both qenerat ions, at least once per qenera tion suqqestinq an autosomal dominant inheritance. In twin population A and B blood groups were predominant ( 7.70 ), in contrast with the dominance of 0 qroup in Turkish population. q roup A larqelv accounted for this difference. We have not encountered B Rh(~5 and 0 Rh(-) blood qroups in twin population. Dermatoqlyphic patterns showed that to` pattern was mast frequent in monozvoot ic twins, where as RL oattern was not seen, the UL pattern, most frequent lv seen in qeneral papulation was of seconderv freauencv in twins, In dizygotic twins the most frn-auent pattern was ULs W was the second and A third most freouentlv seen pattern.ii If was concluded that tw inn i no is d i recti v re la - ted with maternal aoe birth order and ancestral historv of twinnincu Dermatoalvph ic patterns of dizvootic twins are similar to those in General ooDulat ion. whi 1© W oat- tern is predominant in manozvqatic twins» We have not encountered B Rh<--) and Q Rh(-) blood arouos in twins; and we have observed relations between twinninq and blood groups»