The experiments of using defective in the 1955—1959 showed that individual genes have a simple linear structure and are likely to be equivalent to a linear section of DNA. If any person is reported for trying to personally contact, or PM another user, that person will be permabanned. The modified suicide gene converts the non-toxic prodrug into a cytotoxic substance. Modern synthesis and its successors [ ] Main article: The theories developed in the early 20th century to integrate with are called the , a term introduced by. : 5.