Buzzard I M, Uchida I A, Norton J A, Christian J C
Am J Hum Genet. 1983 Mar;35(2):318-23.
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.
除了合子性之外,胎盘形成类型已被证明是双胞胎研究中的一个重要变量。人们发现,人类双胞胎的一些数量性状受绒毛膜类型的影响。我们的研究证实了一项早期发现,即胎盘融合的双绒毛膜双胞胎的出生体重对数值变异大于胎盘分离的双绒毛膜双胞胎。这一发现强调了详细的双胞胎胎盘检查对于识别可能受产前环境影响的性状的重要性。