Multiple choice

A persons's ABO blood type is generally determined by

  1. genetic factors as well as environmental factors

  2. environmental influences alone

  3. the presence of one of A, B, or O alleles inherited from the parents

  4. antibodies present in the blood
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.

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