双头畸胎在爬行动物中很常见，尤其是英国草蛇，这种蛇把卵产在堆肥堆里，肥料里面正在腐烂的物质产生热量。
Dicephalus is common in reptiles and particularly in British grass snakes, who lay their eggs inside compost heaps where decomposing matter produces heat.
同卵双生双胞胎和双卵双生双胞胎分享仅50%的基因。
Siblings and dizygotic twins share only 50% of their segregating genes.
我们描述一个案件双卵双胎妊娠其中提到了我们的中心，因为一个不和谐的异常之一的双胞胎。
We describe a case of dizygotic twin pregnancy which was referred to our centre because of a discordant anomaly of one of the twins.
其中主要的变异有两类，即多卵卵器胚囊(53.3%)和双套结构胚囊(6.3%)。
Of most two kinds of variant embryo sac, referred as poly egg apparatus embryo sac (53.3%) and double set of embryo sac (6.3%) were found.
这是就我们所知，只有少数几个病例报告不和谐双卵双胞胎的这种不正常现象。
This is, to our knowledge, one of the few documented cases reported on dizygotic twins discordant for this anomaly.
一个简单的技术，DNA分析表明，两个更严重的影响是同卵三胞胎和少三分之一严重影响三重双卵。
A simple technique of DNA analysis showed that two of the more severely affected triplets were monozygotic and the third less severely affected triplet dizygotic.
有关孪生子的研究预告，本病单卵孪生的同病率比双卵孪生一般高4 ~6倍，寄养子也是如此。
Notice to twin studies on the disease with the disease monozygotic twins than dizygotic twins rate of 4 to 6 times the height of the foster child as well.
有关孪生子的研究预告，本病单卵孪生的同病率比双卵孪生一般高4 ~6倍，寄养子也是如此。
Notice to twin studies on the disease with the disease monozygotic twins than dizygotic twins rate of 4 to 6 times the height of the foster child as well.
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