Abstract
In addition to zygosity, the type of placentation has proven to be an important variable in twin studies. A number of quantitative traits in human twins have been found to be influenced by chorion type. Our study confirms an earlier finding that there is larger within-pair birth weight variability in dichorionic twins with fused placentas than in those with separate placentas. This finding emphasizes the importance of detailed twin placental examinations to help identify traits that may be influenced by prenatal environmental influences.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bryan E., Slavin B. Serum IgG levels in feto-fetal transfusion syndrome. Arch Dis Child. 1974 Nov;49(11):908–910. doi: 10.1136/adc.49.11.908. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Christian J. C. Testing twin means and estimating genetic variance: basic methodology for the analysis of quantitative twin data. Acta Genet Med Gemellol (Roma) 1979;28(1):35–40. doi: 10.1017/s0001566000009314. [DOI] [PubMed] [Google Scholar]
- Corey L. A., Kang K. W., Christian J. C., Norton J. A., Jr, Harris R. E., Nance W. E. Effects of chorion type on variation in cord blood cholesterol of monozygotic twins. Am J Hum Genet. 1976 Sep;28(5):433–441. [PMC free article] [PubMed] [Google Scholar]
- Feinleib M., Christian J. C., Ingster-Moore L., Garrison R. J., Breckenridge W. C., Uchida I. The Hamilton twin study: comparison and serum lipid levels in monozygotic and dizygotic twins by chorion type. Prog Clin Biol Res. 1981;69(Pt 100):149–161. [PubMed] [Google Scholar]
- KEMPTHORNE O., OSBORNE R. H. The interpretation of twin data. Am J Hum Genet. 1961 Sep;13:320–339. [PMC free article] [PubMed] [Google Scholar]
- Kaplan C., Benirschke K. The acardiac anomaly new case reports and current status. Acta Genet Med Gemellol (Roma) 1979;28(1):51–59. doi: 10.1017/s0001566000009338. [DOI] [PubMed] [Google Scholar]
- MORTON N. E. The inheritance of human birth weight. Ann Hum Genet. 1955 Oct;20(2):125–134. doi: 10.1111/j.1469-1809.1955.tb01362.x. [DOI] [PubMed] [Google Scholar]
- Melnick M., Myrianthopoulos N. C., Christian J. C. The effects of chorion type on variation in IQ in the NCPP twin population. Am J Hum Genet. 1978 Jul;30(4):425–433. [PMC free article] [PubMed] [Google Scholar]
- Reed T., Uchida I. A., Norton J. A., Jr, Christian J. C. Comparisons of dermatoglyphic patterns in monochorionic and dichorionic monozygotic twins. Am J Hum Genet. 1978 Jul;30(4):383–391. [PMC free article] [PubMed] [Google Scholar]