Parents are a child what blood type should be

Blood type is determined by the combination of three genetic factors such as A, B, and O, and most of them can be judged according to the blood type of the parents. The genetic law of blood group is: a a a, o; a＋b→a、b、o、ab； a＋o →a、o； a＋ab→a、b、ab； b＋b→b、o； b＋o→b、o； b＋ab→b、a、ab； o＋o→o； o＋ab →a、b；ab ab a, b, ab so you know whether your child may have blood type A or blood type O.

China is the first country in the world with the first blood type. As early as the Three Kingdoms period, there was a "blood test method" to confirm blood relationship. According to Dr. Song Jieping of the Genetic Center of Hubei Provincial Maternal and Child Health Hospital, there are many types of human blood types and they are very complex.

The four blood types we usually talk about, A, B, O, and AB, actually belong to a blood group system, called the ABO blood group system. Twenty-six blood group systems have been found in humans, each with a varying number of blood groups. However, among these blood group systems, the ABO blood group system was the first to be discovered and has the greatest impact on humans.

Blood type is hereditary, according to the law of blood type heredity, if you know the blood type of the parents, you can deduce which blood type the child may be, which blood type cannot be, which can provide some reference value in the forensic identification of parental authority, of course, the most accurate method at present is DNA testing. In addition, understanding the genetic law of blood type is also of great significance for blood transfusion or ** blood diseases.

As shown in the table, both parents are O blood type people, and the genetic relationship is the simplest, and the child can only be blood type O; When the parents have "A B" blood type, the genetic relationship is the most complex, and the child may have four blood types: AB, A, B, and O. In addition, it is worth noting that when the blood type of the husband and wife is incompatible, there may be a "hemolytic baby" phenomenon, neonatologists said, the "hemolytic baby" phenomenon is more complicated, generally refers to the mother is O blood type, the child is other blood types, at this time the mother is pregnant with such a child, the child as the mother's "foreign body", so that the mother produces antibodies, and the antibodies in turn destroy the child's blood cells, thereby producing hemolysis. This condition can easily lead to premature birth, neonatal jaundice, etc., and it is recommended that couples check the blood type of both parties before becoming pregnant, and interventions can be taken in advance.

ABO blood group system genetic pattern table.

Parental blood type o+o, o+a, o+b, o+ab, a+a, a+b, a+ab, b+b, b+ab, ab+ab

The blood type of the child is oh, oh, oh, oh, oh, ah, ah, oh

Please refer to the above tables in turn.