You have a patient, Janet, that has screening for her son, Julian, to have a dominant rare genetic disorder which occurs in 1/1000 individuals. The test is 50% accurate. The Julian tests negative. Assuming the disorder is 100% penetrant, what is the likelihood that he will have symptoms of the disorder in question? Use Bayes' theorem. b. What if the incidence of the condition was instead 1/100 and detection is 75%?.