Patient's question:
[Condition Description: I am AB blood type, my wife is B blood type, we just had a baby, and I don't know what the baby's blood type is. Medical history and effectiveness: No tests have been conducted. Desired help: I want to know what blood type the baby is.]Doctor's answer:
The inheritance of the three ABO antigens is controlled by three alleles, with the blood type gene being a multiple allele. At the relative loci, three blood type genes can appear, namely A, B, or O, resulting in six possible combinations at the relative loci, such as AA, BB, OO, AB, AO, or BO, which are referred to as genotypes. The A or B alleles are dominant, while the O allele is recessive. Corresponding to the above genotypes, the phenotypes are A, B, O, AB, A, and B types, which practically manifest as four blood types: A, B, O, and AB.During the fusion of sperm and egg cells, the relative chromosomes from the father and mother pair up, so half of each parent's traits are inherited by the offspring. For example, if the father has an A blood type with a genotype of AO (assumed), half of his germ cells carry the A allele, while the other half carry the O allele. If the mother has a B blood type with a genotype of BO (assumed), her offspring can have A, B, O, or AB blood types. If the mother is BB, her offspring will exhibit AB or B blood types.