How do I know the future of the baby's blood group
Blood child - a topic that worries many parents. It is associated with numerous curiosities and even tragedy. Rate which blood can be your child is important, as there is likelihood of blood group conflict between mother child. How to define it?
You will need:
- paper; - a pen;
Instruction how to recognize the unborn child blood group
Blood type is determined by the types of antigens (agglutinogens) is on the surface of red blood cells. Two major types of antigen - A and B. Accordingly, the erythrocytes can be either the type A antigens only - the second group of blood, or from type B - a third group of blood, or both A and B - the fourth group, or they may be - the first group.
Blood type is inherited on the basis of complete and incomplete dominance and determined by which blood group genes have parents. There are three types of blood group genes: A - detects the presence of type A antigen; B - detects the presence of the antigen type B; 0 - defines the absence of antigens. Each of these genes in the human genome to 2. This may be the following combinations: 00. The first blood group antigens on red blood cells do not. AA or A0. Present only antigens of type A blood group - the second. BB or B 0. Presence of the antigen type B, a third group of blood. AB. There are two types of antigens, blood group - the fourth.
In order to assess what blood group can be your baby, it is important to know that a child from each parent passed on 1 blood group gene. This gives rise to four possible combinations of these genes. The easiest way is to look at a table, in which the top row contains the possible genes of one parent and the left column - the genes of the other parent. As can be seen from the table, which is painted with an option for a pair of fourth and first blood groups can not unequivocally predict which group will have the baby.
Make a table for your pair. Note that if someone from your second or third group of blood, you need to consider several options for combinations of genes. The table shows the possible blood groups based on the genotype of the parents, in brackets blood.