Starting with a population of genetically identical mice, a…
Starting with a population of genetically identical mice, a scientist discovers two new independent mutant mice that have epileptic seizures. The researcher performs a series of crosses to generate two pure-breeding lines in which all the animals have seizures. In both strains, the seizures are due to a single mutation in DNA. You cross a mutant mouse from one strain to a mutant mouse from the other strain and find that none of their many offspring have seizures. From this experiment you would conclude that the two mutant strains of mice most likely have mutations in: