Probability

Question

If a parent had a genetic disorder that had 8 children, 7 were healthy but 1 child was found to have a genetic disease, what are the odds that the parent carries the disease? The nature of the genetic disease is that there is a 50% chance it can be inherited and a 50% chance it has occurred as a genetic mutation totally of the blue (so not inherited). 

Answer 1

The information presented has too variables to give an accurate answer: the disease may or may be inherited; the parent or the parent could have the genetic disorder: the question does not indicate the gender of the mentioned parent or the children so we don't know if the genetic disorder could be a sex-linked trait; the genetic disorder could have occurred in development.