Zoology - Biotechnology - Principles and Processes Question with Solution | TestHub

A protein that recognizes and cuts a small and specific nucleotide sequence of DNA is called a restriction enzyme. The site at which these restriction enzymes act is called restriction site or target sequence. Restriction enzymes belong to the class of nucleases. Nucleases are of two types - Endonucleases and Exonucleases. The function of endonucleases is to cut the ends of the DNA molecule where as the endonucleases cut the DNA at specific positions within it.