Your right Wendy-Lee. I carry a different strain of CAH than my husband does. We were told by Dr. New's office that there is a dominant one. I seem to remember them saying that the strain that is less severe would present at birth. My son has my strain yet my daughter is a carrier and has my husband's strain of CAH. Ann Carlton is the geneticist and Cornell and I have found her to be extremely helpful with any questions that I have had. You might want to give her a call. Hope this helps.