ABO blood group system is described by b) multiplealleles. Multiple alleles happen when there are more than two possible alleles for a single chromosomal locusWhat happens in ABO blood group?ABO blood group system is the classification of human blood based on the inherited properties of red blood cells which is determined by the presence or absence of the antigens A and B. Persons can have A, type B, type O, or type AB blood.Multiple alleles occurs when there are more than two possible alleles for a singlechromosomallocus and ABO blood group is a classic example. Every person has two number 9 chromosomes and, hence, two alleles forABOblood types.To know more aboutABO blood group, referbrainly.com/question/27757703#SPJ4...

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