What blood groups will the children have if the father has group 3 (homozygous) and the mother has 4.
| May 23, 2021 | education
The gene responsible for blood groups in humans is represented by three alleles A, B and O. At the same time, the O allele is recessive in relation to A and B.
The father has a 3 blood group and is homozygous, that is, his genotype is BB, and the mother has a 4 group, which means the genotype is AB.
РР w AB (4) x m BB (3)
m / f B B A AB (4) AB (4) B BB (3) BB (3)
By phenotype: 50% – 3 blood group; 50% – 4th group.
By genotype: 50% – heterozygotes; 50% are homozygotes.
Answer: in this family, children with parental blood groups can be born, in a ratio of 1: 1.
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