There are 3 ways of obtaining DNA fragments: Restriction endonuclease Reverse transcriptase And gene machine
But why are there 3 methods? Like how come we can’t just use one method to obtain DNA fragments from an organism? I know the methods of each one but just not sure why there are different ones and in which circumstances we’d use each one in. I’ve tried googling this but I’m getting no answers. Please help! Thank you (Hope everyone’s a levels are going well!)