<prompt> True statement about transgenic mice isDeveloped from DNA inseion into feilized eggHave same genome as parents except one or more genesIdentical genome to parent miceProduced by breeding over several generations  <response>: In 1974 Rudolf Jaenisch created the first genetically modified animal by inseing a DNA virus into an early-stage mouse embryo and showing that the inseed genes were present in every cell. 