Question

can anyone tell me how to make restriction map? if only fragements size are given which has been digested by different restriction enzymes

Answer 1

you must have sizes of fragments resulting from the digestion of a DNA sequence by-means each enzyme independently. and then, fragments resulting from digestion with these enzymes at the same time. There are a lot of ideas and some times the experience lead to an incomplete map (when for example 2 fragments can be replaced by each other)

as an example, you can see the attached file