Genetic question

If a man with blood type A, one of whose parents had blood type O, marries a woman with blood type AB, what will be the theoretical percentage of their children with blood type A?

1 answer

http://www.paternityangel.com/Articles_zone/Blood/BloodType2.htm

http://209.85.165.104/search?q=cache:EBt1hadaT20J:genetics.web.emory.edu/pdf/factsheet43.pdf+genetics,+blood+type&hl=en&ct=clnk&cd=7&gl=us&ie=UTF-8