Jewish Involvement in Genetic Engineering

May a Jew genetically alter a mouse, or may a Jew use a mouse if it has been genetically engineered by a gentile? What is the status of animals in Jewish law? (Arthur P., Gershman, Arlington, VA) Genetic engineering is a field that is still in its infancy, but we can expect major advances in this area in the future. At the moment it is possible to introduce permanent genetic changes in plants, animals, and human beings. There are many questions about exercising control and about the dangers that may arise from new, altered, or hitherto unknown substances formed through