Never judge a man by his _____ alone — you might be fooled by what he looks like.

A． character

B．appearance

C．intelligence

D．application

“基因型身份证”主要是利用国内外最先进的DNA指纹技术，选取若干个固定的遗传基因位点进行鉴定。位点上的信息主要来自人体细胞的[ ]

A．细胞膜

B．细胞质

C．细胞壁

D．细胞核