Multiple choice

A person's ABO blood type is typically predetermined by

  1. genetic inheritance and environmental influences during his course of life

  2. environmental factors alone

  3. the inheritance of 1 of 3 possible alleles, i.e. either A, B or O from each of the parent

  4. combination of 2 of 3 possible alleles, i.e. either A, B or O from each of the parent
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In most cases, these alleles are totally responsible for determining blood type phenotypes. The inheritance usually follows simple Mendelian patterns. However, there are rare exceptions such as Bombay Phenotype.

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