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遗传学是一门关于正常或异常性状遗传的学科,它还涉及基因在环境中的活动。控制环境能改变基因的表现。人类遗传学可再分为群体遗传学、细胞遗传学、生化遗传学、免疫遗传学、体细胞遗传学以及应用或临床遗传学。群体遗传学群体遗传学(Population Genetics)研究性状遗传的方式和基因在群体中的分布。由于除了男性的性染色体外,全部染色体(携带基因的结构)都是成对存在的,因而人体细胞都含有成双的基因,这两个基因的复本可能彼此相同,也可能在亚结构及其产物方面有分别。如基因的两个复本相同,此个体是纯合子,如果不同,此个体就是杂合子。在染色体同一位点
Genetics is a discipline about the inheritance of normal or abnormal traits, it also involves the activity of genes in the environment. Control environment can change the performance of genes. Human genetics can be further subdivided into population genetics, cytogenetics, biochemical genetics, immune genetics, somatic cytogenetics and applications or clinical genetics. Population Genetics Investigates the way of genetic inheritance and the distribution of genes among populations. Since all chromosomes (carrying the gene’s structure) are paired except for male sex chromosomes, human cells contain double genes and the duplicates of these two genes may be identical to each other and may differ between substructures and Their products are different. If two copies of the same gene, this individual is homozygous, if different, this individual is heterozygous. At the same chromosome site