Papadopoulos N
Johns Hopkins Oncology Center, Baltimore, Maryland, USA.
Clin Exp Allergy. 1995 Nov;25 Suppl 2:116-8. doi: 10.1111/j.1365-2222.1995.tb00438.x.
The most common procedure for isolating genes that predispose to a certain disease is positional cloning. This process is initiated by mapping the responsible gene to its location on a chromosome linked to the disease. Successive cloning of the region results in the isolation of candidate genes. Finally, identification of mutations by mutational analysis points to the correct gene.
分离导致某种疾病的易感基因最常用的方法是定位克隆。这个过程首先要将相关基因定位到与该疾病相关的染色体上。对该区域进行连续克隆会分离出候选基因。最后,通过突变分析鉴定突变,从而确定正确的基因。