First, I'm trying to clone my inserts tat and rev into pJET1/blunt vector. It is a positive selection vector. You can use non-purified
PCR products in ligation reaction and after transformation you plate the mixture LB amp plates. You don't need to use XGal or IPTG. Due to a lethal gene, only recombinant colonies survive. I got at least 30 colonies in a plate. Although I easily cloned tat, I couldn't find a plasmid including rev insert. (I did colony
PCR to all colonies). It is really interesting. I repeated it with purified
PCR product, but the result is same. Is there any idea why colonies appear but have no insert?