“Mr. Lee with a homozygous blood type A, married Mrs. Kim with a heterozygous type B blood. “23. What is the percentage of their offspring having a blood type A?*1 point25%50%75%100%
Question
“Mr. Lee with a homozygous blood type A, married Mrs. Kim with a heterozygous type B blood. “23. What is the percentage of their offspring having a blood type A?*1 point25%50%75%100%
Solution
To answer this question, we need to understand the genetics of blood types.
Blood type is determined by two alleles (one from each parent). The A and B alleles are co-dominant (both are expressed if present), and the O allele is recessive (only expressed if no A or B allele is present).
Mr. Lee has a homozygous blood type A, which means he has two A alleles (AA). Mrs. Kim has a heterozygous type B blood, which means she has one B allele and one O allele (BO).
Their possible offspring, based on these combinations, could have either AB or AO blood types.
AB is a result of one A allele from Mr. Lee and one B allele from Mrs. Kim. AO is a result of one A allele from Mr. Lee and one O allele from Mrs. Kim. AO is effectively blood type A, because the O allele is recessive.
So, the percentage of their offspring having a blood type A (AO) is 50%.
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