02-09-2007, 02:07 PM
Neurofibromatosis type 1 is one of the most common autosomal dominant disorders. A woman with neurofibromatosis type 1 has an unaffected partner. Which of the following is correct regarding their children?
a) The probability that each of their children will be affected is 1 in 4.
b) The probability that their second child will be affected if their first child is affected is 1 in 4.
c) The probability that their third child will be affected if their first two children are affected is 1 in 2.
d) If their first child is affected then their second child will not be affected.
a) The probability that each of their children will be affected is 1 in 4.
b) The probability that their second child will be affected if their first child is affected is 1 in 4.
c) The probability that their third child will be affected if their first two children are affected is 1 in 2.
d) If their first child is affected then their second child will not be affected.