In human blood types, Rh positive is a trait that shows simp…

In human blood types, Rh positive is a trait that shows simple dominance over Rh negative. A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Which of the following phenotypes is possible for the father? (Hint: Do not guess! Draw a Punnett square on a piece of scratch paper. You have been given extra time for this problem.)

There are surface markers (a type of molecule, usually a car…

There are surface markers (a type of molecule, usually a carbohydrate or a protein) found on red blood cells that help the body’s immune system identify the cells as “self” or “foreign”. The presence or absence of these markers determine one’s blood type and are called: