When getting an X-ray taken at the doctors office, you notice the technician cover you with a heavy vest. This vest, you are told, contains lead, a metal that can block X-rays, which are a form of radiation. The technician covers your torso, and folds the vest
over double across your reproductive organs (testes/ovaries). This is done because radiation can damage the DNA of theses
organs, causing a mutation you may pass to children. Substances like radiation and other certain chemicals are known as mutagens
because