Understanding the ABO Blood Group System
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Questions and Answers

Which blood group phenotype results from the genotype A/B?

  • B phenotype
  • AB phenotype (correct)
  • A phenotype
  • O phenotype

Which gene produces the B antigen in the ABO blood group system?

  • B allele (correct)
  • O allele
  • A allele
  • AB allele

Inheritance of which allele results in no antigens (silence gene) and is recessive to A and B?

  • O allele (correct)
  • B allele
  • A allele
  • AB allele

How many main phenotypes are there in the ABO blood group system?

<p>4 (A)</p> Signup and view all the answers

Where is the ABO gene located?

<p>$9^{th}$ chromosome (B)</p> Signup and view all the answers

Which of the following is the correct description of the ABO blood group system?

<p>It consists of two antigens, A and B, and has 3 alleles: A, B, and O (E)</p> Signup and view all the answers

What is the clinical importance of the ABO blood group system?

<p>It is the most important system in transfusion medicine (A)</p> Signup and view all the answers

Which phenotype results from the genotype O/O in the ABO blood group system?

<p>O (D)</p> Signup and view all the answers

How many blood group systems genes have been identified as of 2021 according to ISBT?

<p>43 (D)</p> Signup and view all the answers

Who described the ABO blood group system in 1901?

<p>Karl Landsteiner (C)</p> Signup and view all the answers

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