Ecosystem diversity, the diversity of a place at the level of ecosystems. Crop diversity, the variance in genetic and phenotypic characteristics of plants used in agriculture. Functional diversity (ecology), the elements of biodiversity that influence how ecosystems function; see diversity-function debate.
Gene therapy is the therapeutic delivery of nucleic acid polymers into a patient's cells as a drug to treat disease. Until September 1990, it had never been successfully done, and it is still an experimental and emerging medical technology.
Although gene therapy is a promising treatment option for a number of diseases (including inherited disorders, some types of cancer, and certain viral infections), the technique remains risky and is still under study to make sure that it will be safe and effective.ene therapy is an experimental technique that uses genes to treat or prevent disease. In the future, this technique may allow doctors to treat a disorder by inserting a gene into a patientâs cells instead of using drugs or surgery.