Biology, asked by manueljohanah, 4 months ago

The human blood type is determined by co-dominant alleles. A boy has type A blood and his sister has homozygous recessive blood. the father has type B blood. What are the blood types and genotypes of the kids and their parents including their mother?

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Answered by manasanalli50
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Answer:

The Human ABO markers: The A, B, and O alleles

Human blood type is determined by co-dominant alleles. An allele is one of several different forms of genetic information that is present in our DNA at a specific location on a specific chromosome. There are three different alleles for human blood type, known as IA, IB, and i. For simplicity, we can call these alleles A (for IA), B (for IB), and O (for i).

Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father. A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.

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