Inheritance of blood types and also Rhesus factor happens under laws of genetics. Having used them it is possible to allocate without effort possible options and to assume what blood type your future child will have. For this purpose there are tables and schemes.
Instruction
1. Division of blood into four groups is based on AB0 system. And yes In are antigens of erythrocytes. If they are absent at the person, means group of its blood – the first. If is only And, but there is no second In, then, only In – the third, And yes In – the fourth. The most exact definition of belonging of blood to any given group can be defined exclusively in vitro.
2. Remember the school program in biology. Are transferred to the child from about absence or existence of agglyutinogen (And, B or 0).
3. In the simplified scheme the genotypes of people of various blood types register thus: - the first blood type – 00. One of them is given from mom, another from dad. Therefore, and the child inherits the first blood type; - if you and at your spouse have the second blood type of AA or A0, then the child will have blood of the first or second group (And or 0); - parents with the third BB or B0 group will expect the kid with the first or third group; - if mom with dad has the fourth group, then their son or the daughter will have either the second, or the third, or the fourth group.
4. Use the table to calculate the probability of inheritance by the child of any given blood type from parents. For example: if at one of parents the fourth blood type, and at another the first, then the child receives either the third, or second group. In such family the blood type of the baby will never coincide with parental.
5. Remember that the blood type calculated by means of special tables and schemes is not considered final. To obtain exact information concerning a blood type and your Rhesus factor of the baby you will be able only in laboratory. Definition of group happens according to the analysis of blue blood.