Blood Types

Sample Question: A child is born with Type A blood. The mother has type B in the heterozygous form. She files a paternity suit and notifies a man that he is the father. The man has type O blood. Can he be the father of this child?

Sex-Linked Inheritance

XX = Female

XY = Male

Men are usually affected by sex-linked disorders

*Affected males never pass the disease to their sons

How to solve sex-linked problems