MULTIPLE ALLELES (Post-Viewing)

What are the possible phenotypes for human blood type?

• A and B only

• A, B and AB

• A, B, AB and O

Which alleles are responsible for the phenotypic expression of ABO blood types?

• I^A and I^B

• I^A , I^B and I^AI^B

• I^A , I^B and i

What determines blood types in humans?

• antibodies

• antigens

What antigen is present on the surface of Red Blood Cells of a Type A person?

• A

• B

• D

• Both A and B

What antigen is present on the surface of Red Blood Cells of a Type B person?

• A

• B

• D

• Both A and B

What antigen is present on the surface of Red Blood Cells of a Type AB person?

• A

• B

• D

• Both A and B

What antigen is present on the surface of Red Blood Cells of a Type O person?

• A

• O

• none

• Both A and B

Why can someone with type O blood donate blood to everyone?

• Because type O blood does have antigens A and B.

• Because it doesn't have A or B antigens that would cause it to be attacked by antibodies that will cause clotting or clumping.

Why can people with type AB accept blood from anyone?

• Because they don't have any antigens at all.

• Because they have already both the A and B antigens.

What pattern of non-Mendelian Inheritance is shown in ABO blood group?

• Codominance

• Incomplete Dominance

• Multiple Alleles

• X-linked