Chapter 19, Problem 5AWK

Summary Introduction

To review:

The reason as to how a father having blood type A and a mother who is blood type B can have a child with blood type O.

Introduction:

In blood type, two types of alleles are found in each gene and each allele has genotype A, B or O. Out of these genotypes, A and B are dominant while O is recessive. In case genotype A combines with gene A or O, then blood group will be A type because gene A is dominant over O. Similarly if gene B combines with gene B or O then blood group will be B type, because gene B is dominant over O.