"In Dangerous Liaisons? geneticist Norman C. Ellstrand examines these and other questions. He begins with basic information about the natural hybridization process. He then describes what we now know about hybridization between the world's most important crops - such as wheat, rice, maize, and soybeans - and their wild relatives. Such hybridization, Ellstrand explains, is not rare, and it has occasionally produced a substantial impact. In some cases,...