@IDANKINGO get two genetic sample containers(available at market) and drag one over a female creature and drop, and drag the other container over a male creature(if you don't have two creatures[or genetic sample containers] of opposite sex, you can bid on them in the auction). When you have the full containers, take them to the laboratory, and drop one of each into the opposing panels. Then, make genetic manipulations, or just press "create." Does that help?