AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

BLOOD GROUPS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Considering that there are 6, 000-13, 000 Fy antigen sites/RBC. Which of the following is true?
A
Fy(a-b-) is rare in the middle east
B
Fy reacts best at IAT
C
Duffy is not involved in cases of HDFN
D
Fy will induce natural production of IgM antibodies
Explanation: 

Detailed explanation-1: -Rh test. Rh blood type checks for the Rh antigen (also called the Rh factor) on red blood cells.

Detailed explanation-2: -Each person has an ABO blood type – either A, B, AB, or O – which means antigen A, antigen B, both antigens (type AB), or neither antigen (type O) is found on their blood cells. Each person also is either Rh-positive or Rh-negative (you either have Rh or you don’t).

Detailed explanation-3: -blood group AB – has both A and B antigens, but no antibodies.

Detailed explanation-4: -There are currently 43 recognised blood group systems containing 349 red cell antigens (September 2022). The 43 systems are genetically determined by 48 genes.

There is 1 question to complete.