How likely is it that both my children also suffer from ADHD?

I have very recently been diagnosed with ADHD and to be honest, initially I thought it was rediculous. Now that my MD. and my therapist both agree and I've done research its beginning to make perfect sense. But the more I research and realize my bad habbits and most major faults are symptoms I'm wondering if my children suffer from the same disorder. They seem to have all my worst faults and I've faulted myself for teaching these things to them by not being able to stop it myself. Now I wonder if the boys have the same thing. How likely would it be that both my boys have this also.......the more I read the more I see US not just ME. If it took 36 years for them to figure this out about me is it possible I've also neglected to see it in my children?? If so I'll feel even more guilty than I've felt all these years when I thought my faults rubbed off on them.