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很早以前,人们就认为吸烟习惯受遗传的影响。证明这一提法的最适合方法是比较单卵双胎儿和双卵双胎儿的吸烟习惯。遗传学家Fisher1958年将德国51例单卵双胎儿和31例双卵双胎儿及英国女性53例单卵双胎儿和18例双卵双胎儿的吸烟习惯进行比较。结果无论哪组都是单卵双胎儿吸烟习惯的符合率高。1959年Friberg将瑞典的59例单卵双胎儿和双卵双胎儿的吸烟习惯进行比较,也报告单卵双胎儿吸烟习惯符合率高,以后很久没有这方面的报告。直至1982年Kapri-o等以芬兰和瑞典两个国家的数千例双胞胎数据为基础,报告了吸烟习惯和饮酒习惯符合率的调查结果,即
Long ago, people thought that smoking habits were genetically influenced. The most suitable way to prove this is to compare the smoking habits of monozygotic twins and twins. The geneticist Fisher1958 compares the smoking habits of 51 monozygotic twins and 31 double-breasted twins and 53 British single-egg twins and 18 double-egg twins in Germany. Results no matter which group are monozygotic twins smoking habits with a high rate. In 1959, Friberg compared the smoking habits of 59 monozygotic twins and double-egg twins in Sweden, and also reported a high coincidence rate of monozygotic twins smoking habit. Soon after, no report was available. Until 1982, Kapri-o and other thousands of twins in Finland and Sweden based on the data reported on the compliance of smoking habits and drinking habits of the survey results that