Abstract
The Yoruba people of Nigeria possess a twinning rate more than fourfold that of Caucasian populations. As such, they provide extraordinary possibilities for the study of multiple birth. Percy Nylander clarified many of the factors that contribute to this high incidence of twinning. His analyses of Nigerian placentation and zygosity have shown the increased rate of multiple pregnancy to be a result of higher proportions of dizygotic twins and trizygotic triplets as compared to Caucasian populations. Whereas a well-established genetic influence upon dizygotic twinning exists throughout the rest of the world, there may be an environmental factor in Nigeria responsible for the increased incidence of multiple births. Nylander's study of the Yoruba also has provided important contributions to the studies of perinatal mortality in multiple gestation. In totality, much of Nylander's work can be applied to further the understanding of ethnic and racial differences in human twin placentation and zygocity.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 379-387 |
| Number of pages | 9 |
| Journal | Journal of Reproductive Medicine for the Obstetrician and Gynecologist |
| Volume | 34 |
| Issue number | 6 |
| State | Published - 1989 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Reproductive Medicine
Cite this
The Yoruba contribution to our understanding of the twinning process. / Creinin, Mitchell D; Keith, L. G.
In: Journal of Reproductive Medicine for the Obstetrician and Gynecologist, Vol. 34, No. 6, 1989, p. 379-387.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The Yoruba contribution to our understanding of the twinning process
AU - Creinin, Mitchell D
AU - Keith, L. G.
PY - 1989
Y1 - 1989
N2 - The Yoruba people of Nigeria possess a twinning rate more than fourfold that of Caucasian populations. As such, they provide extraordinary possibilities for the study of multiple birth. Percy Nylander clarified many of the factors that contribute to this high incidence of twinning. His analyses of Nigerian placentation and zygosity have shown the increased rate of multiple pregnancy to be a result of higher proportions of dizygotic twins and trizygotic triplets as compared to Caucasian populations. Whereas a well-established genetic influence upon dizygotic twinning exists throughout the rest of the world, there may be an environmental factor in Nigeria responsible for the increased incidence of multiple births. Nylander's study of the Yoruba also has provided important contributions to the studies of perinatal mortality in multiple gestation. In totality, much of Nylander's work can be applied to further the understanding of ethnic and racial differences in human twin placentation and zygocity.
AB - The Yoruba people of Nigeria possess a twinning rate more than fourfold that of Caucasian populations. As such, they provide extraordinary possibilities for the study of multiple birth. Percy Nylander clarified many of the factors that contribute to this high incidence of twinning. His analyses of Nigerian placentation and zygosity have shown the increased rate of multiple pregnancy to be a result of higher proportions of dizygotic twins and trizygotic triplets as compared to Caucasian populations. Whereas a well-established genetic influence upon dizygotic twinning exists throughout the rest of the world, there may be an environmental factor in Nigeria responsible for the increased incidence of multiple births. Nylander's study of the Yoruba also has provided important contributions to the studies of perinatal mortality in multiple gestation. In totality, much of Nylander's work can be applied to further the understanding of ethnic and racial differences in human twin placentation and zygocity.
UR - http://www.scopus.com/inward/record.url?scp=0024386851&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024386851&partnerID=8YFLogxK
M3 - Article
C2 - 2500514
AN - SCOPUS:0024386851
VL - 34
SP - 379
EP - 387
JO - The Journal of reproductive medicine
JF - The Journal of reproductive medicine
SN - 0024-7758
IS - 6
ER -