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在高中生物必修和选修中,关于基因工程的问题中,有这样一道题目:下列有关限制酶的说法不正确的是()A.限制酶广泛存在于各种生物中,微生物中很少分布B.一种限制酶只能识别一种特定的核苷酸序列C.不同的限制酶切割DNA的切点不同D.限制酶的作用之一可用来提取目的基因这是一道普通的选择题,答案是A,其实对于限制酶我们还应该更多地去了解,去思考。限制酶是限制性核酸内切酶的简称,它是20世纪60年代在
In high school biology compulsory and elective, on the issue of genetic engineering, there is such a problem: the following restriction on the enzyme is not correct () A. Restriction enzymes are widely present in a variety of organisms, microorganisms rarely distributed B A restriction enzyme recognizes only one specific nucleotide sequence C. Different restriction enzymes cut different DNA cleavages D. One of the effects of restriction enzymes can be used to extract a gene of interest. This is an ordinary multiple choice question, the answer Is A, in fact, we should also be more understanding of the restriction enzyme, to think. Restriction Enzymes are short for Restriction Endonucleases, which was in the 1960s