M3-M4

Question 1

What is/are the possible genotype of Blood Type O?

Answer 1

OO

Question 2

ABO Blood group system can be seen in what chromosome locus?

Answer 2

Chromosome 9

Question 3

Mother is considered universal recipient for whole blood and father is heterozygous B. What are the possible blood type/s of the offspring?

Answer 3

A, B, AB

Question 4

What is the specimen and reagent in indirect typing?

Answer 4

Serum

Known cells

Question 5

What is the specimen and reagent used for Cell typing?

Answer 5

Red cell suspension; whole blood

Anti-sera

Question 6

What blood type is agglutinated by A agglutinogen but not by B agglutinin?

Answer 6

Type O

Question 7

The agglutinin of this blood group can agglutinate the B cell and the antigen of this blood group can agglutinate Anti-A. What is the blood type?

Answer 7

Type A

Question 8

What is the lectin used for differentiating A1 and A2?

Answer 8

Dolichos biflorus

Question 9

Recite the blood groups from least amount of H antigen to the greatest amount of H antigen

Answer 9

A1B < A1 < A2B < B < A2 < O

Question 10

What blood group is mistaken as bombay phenotype ? Explain.

Answer 10

Blood group O is mistaken as bombay phenotype because both in forward and reverse typing it shows the same reaction.

Question 11

What Rh variant has a phenotype of —/—?

Answer 11

Rh null

Question 12

Anti-A : 0
Anti-B: 0 
A1 cells: 4+
B cells: 4+
O cells: 4+
Auto-control: 0

What is the cause of the discrepancy?
What is the resolution?

Answer 12

Bombay phenotype

Test with Anti-H lectin

Question 13

Anti-A: 4+
Anti-B: 0
A1 cell: 1+
B cell: 4+
O cell: 0
Auto-control: 0

What is the cause of the discrepancy?
What is the resolution?

Answer 13

Subgroup of A: probable A2 with Anti-A1

React patients cells with Anti-A1 lectin

Question 14

Convert R2r” to Fisher-race

Answer 14

DcE/dcE

Question 15

Convert Rhohr’hr”/rh’rh” to Modified wiener

Answer 15

Rory