绍兴地区90岁以上长寿者的调查及遗传分析

通过对绍兴地区54位90岁以上的长寿者的调查及分析，除两人的双亲死于战乱外，其余52位长寿者中他们的双亲或二者之一寿命超过70岁者有37人，双亲的平均寿命为72.94岁，占71.15％。寿命低于70岁的有15人，双亲平均寿命为57．90岁，占28．85％。分析结果表明，寿命是受遗传因子控制的。人的年龄是一个数量遗传性状，是受多基因控制的，即受许多对等位基因控制的，从上述数据可以看出人的年龄是受多基因控制的。同时也明显地受环境因素的影响，如家庭的经济收入、家庭人员之间的关系，性格等因素。每一对等位基因是由一个显性基因和一个隐性基因组成的，只有显性基因对长寿有利。因此总的说，在工作和生活适宜的条件下，一个人具有的显性基因越多，他潜在的年龄就越长。

Invertigation and Genetic Analysis on People Over Ninety in Shaoxing

Fifty-four people whose life span analysed in Shaoxing. Among longgevity people there were 37 people(71. 15%) whose parent age was over 70 the average life span of their parents. It Was 72.94.There were 15 people(28.85%) whose parents died before age 70. The average life span of their parents was 57.90.There were two whose parents died at war. The statistical results showed that life span was controlled by genetic genes. Human age is a quantitative character. It is determined by a multigene or a number of alleles. Although it is evidently influenced by environmental factors. Such as family economy. relations between family members, temperament, ect.. Each pair of alleles is made up of one complete dominant gene and one recessive gene,only the dominant gene benefits longevity. Therefore, in general,under suitable condition of word and life. The more dominant alleles that a person carries, the higher his potential age.