Both fit the 'dominant-recessive' model, for example, the allele for brown hair will always be expressed over the one for blonde hair, but obviously it is not as simple as that. However, in blood types, codominance (where some alleles, in this case those for groups A and B, are as dominant as each other, therefore when both are selected, BOTH are expressed, as opposed to one being expressed) occurs.
(N.B. - an allele is a particular version of a gene)
polygenic inheritanceQ: What type of inheritance is blood type?A: multiple allelesOf all the blood types that hematologists concern themselves with, most people worry about the ABO type. The inheritance for the ABO blood type is codominant, as a parent with A type and a parent with B type can give birth to a child with AB type.
Blood types are determined by specific antigens on the surface of red blood cells, which are inherited from parents. ABO blood group is determined by a person's genotypes at the ABO locus on chromosome 9. The inheritance of blood types follows Mendelian genetics, with the A, B, and O alleles determining the blood type.
codominance and multiple alleles
The likelihood of a child's blood type being determined by the blood types of their parents is high, as blood type inheritance follows specific patterns based on the parents' blood types.
The three main types of blood cells are red blood cells, white blood cells, and platelets. Red blood cells contain hemoglobin, which gives blood its red color. White blood cells help fight infection, and platelets are involved in blood clotting.
There are only two types of inheritance to begin with: single inheritance and multiple inheritance. Since they are mutually exclusive there is no such thing as hybrid inheritance.
You can check your future offsprings blood type using an inheritance chart. If both you and your partner have A blood, then there is a great chance that the child will have A blood as well.
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Single Inheritance Multiple Inheritance Multilevel Inheritance
The maximum number of different blood types the children could have is four: A, B, AB, and O. Each parent can pass on a different allele to their offspring, resulting in a combination of blood types depending on the inheritance pattern.
All blood types are catorgorized by a single gene, and two of three allels in that gene. First start a chart with your blood type, then record all the possible combinations for that type.
Parental blood types play a significant role in determining the blood type of their children. The blood type of a child is determined by the combination of blood types from both parents. Each parent contributes one allele, which can be either A, B, or O, to their child's blood type. The child's blood type is determined by the combination of these alleles, following specific inheritance patterns.