论文部分内容阅读
我们知道,人体细胞的染色体共有46条,相配成23对,其中1～22对男女相同,称常染色体;最后一对称性染色体。男女的性染色体构成是不同的,男性为XY,女性为XX。人类的遗传方式常见有以下几种:(1)常染色体单基因显性遗传,其特点为代代相传,子代患病,男女不限,发病率约占子代的一半;(2)常染色体单基
We know that there are 46 chromosomes in human cells, matching 23 pairs, of which 1 to 22 are the same for both men and women, called autosomal; the last symmetrical chromosome. Sexual chromosomal makeup is different for men and women, male XY, female XX. Common genetic methods are as follows: (1) autosomal dominant single gene, which is characterized by generations from generation to generation, not limited to men and women, the incidence of about half of offspring; (2) often Chromosomal single base