In humans, an example of a heterozygous genotype would be Aa for blood type, where one allele codes for blood type A and the other for blood type B.
A woman with type A blood may have genotype AO or AA. The heterozygous type is AO.
To determine the chance that their first child will have type O blood, we can use a Punnett square. The man, being heterozygous for blood type A (genotype AO), can pass on either the A or O allele, while the woman, being heterozygous for blood type B (genotype BO), can pass on either the B or O allele. The possible combinations for their child are AO, BO, AB, and OO. Therefore, there is a 25% chance that their first child will have type O blood (genotype OO).
The woman would have genotype AO (IAIA) for blood type A, the man would have genotype BO (IBIB) for blood type B, and their child with blood type O would have genotype OO (ii). The child inherited one O allele from each parent.
There is no chance that this baby would have the blood type O. In order for someone to have the blood type O, the genotype must be IoIo. That means that each parent would have to have an O allele in their genotype. In this case only the mother has the possibility of having an O allele. Genotypes of blood type A: IbIb, IbIo Genotype of blood type AB: IaIb Genotype of blood type O: IoIo here is a punit square to show you heterozygous mommy heterozygous daddy IbIo IaIb Ib Io Ib IbIb IbIo Ia IaIb IbIo This child would have 75% chance of having the blood type B and 25% chance of being type AB
A person can have type A blood with a homogenous genotype (two A alleles). In addition, you can be heterozygous A (one O and one A allele).
Assuming a and b are referring to blood types... The father will have the genotype Ao The mother will have the genotype Bo Their offspring will be 1AB:1Bo:1Ao:1oo. This means the child has an equal chance (1/4) of being blood type A, B, AB and O.
The possible genotypes of blood type A are AA and AO. The possible genotypes of blood type B are BB and BO. The genotype of blood type AB is AB. The genotype of blood type O is OO.
If the father is homozygous for the B blood group, giving him the BB blood genotype, and the mother's genotype is AB (the only genotype for the AB blood group), then their offspring could have either the AB or B blood groups. If the father is heterozygous for the B blood group, giving him the BO genotype, then their offspring could have the AB, A, or B blood groups. However, they could not produce an offspring with the O blood group.
Heterozygous is two different allelels for example the geno type Rr
A person with phenotype AB blood must have genotype AB blood. Meaning that the person has inherited both A and B alleles.
The other parent could have a genotype of either AB or B. Blood type B is a result of having a genotype of either BB or BO. Therefore, the other parent could have a genotype of AB which results in blood type AB when paired with the child's B blood type, or blood type B if the other parent has a genotype of BO.