Understanding Blood Types

Which of the following is NOT one of the four main blood types?

• B

• O

• A

• C

If a person inherits an A gene from one parent and an O gene from the other, what will their blood type be?

• AB

• A

• O

• B

What blood type results from inheriting two recessive O genes?

• A

• B

• AB

• O

What is the significance of a dominant gene in determining blood type?

• It has no effect on blood type.

• It determines the blood type if present.

• It only affects blood type if paired with another dominant gene.

• It is always masked by a recessive gene.

In a Punnett square, if one parent has blood type A and the other has blood type AB, what is the probability of their child having blood type B?

• 0%

• 25%

• 50%

• 75%