A client is typed and crossmatched for a unit of blood. Which statement by the nurse indicates a need for further genetic education?
a. "Blood type is formed from three gene alleles: A, B, and O."
b. "Each blood type allele is inherited from the mother or the father."
c. "If the client's blood type is AB, then the client is homozygous for that trait."
d. "If the client has a dominant and a recessive blood type allele, only the dominant will be expressed."
ANS: C
There are three possible gene alleles: A, B, and O. Blood type is determined by only two of the three specific gene alleles. The blood type OO is homozygous in contrast to the blood type AB, which is heterozygous. In the blood type AO, the gene allele A is dominant and will be expressed as blood type A. It is true that each blood type allele is inherited from the mother or the father.
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