PPL scientists will try to solve their problem by ______.
A、removing the sugar molecule on the surface of pig cells.
B、distinguishing human tissues form those of pigs.
C、using the sugar-free nucleus in cloning a pig.
D、taking out the sugar genes from the cell of a pig.
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试题解析
细节理解题。根据题干信息定位到第三段第三句“PPL scientists recently succeeded in finding the gene responsible for the sugar and knocking it out of the nucleus of a pig cell.”,由此可知,科学家们已经成功的将存在于猪的细胞核里的与糖分子相关的基因剔除了,这些基因存在于猪的细胞核,而不是细胞表面,故A选项错误;B选项的观点无中生有;PPL的科学家想用不含糖的细胞核克隆猪,防止人体产生排斥反应,以解决他们的问题,故C项正确;D选项只是解决该问题过程当中的一个步骤,不是解决问题的全部,故不选。