How do you know your blood type?

The first type: go to the hospital for blood type test.

Drop the sucked blood into two grooves that have been filled with professional medicine.

Then I'll know your blood type immediately:

If the blood in both grooves is dissolved in the potion, it is type O blood.

If the blood in the two grooves is insoluble in the potion, it is AB blood.

If the blood in the first tank does not dissolve, the blood in the second tank dissolves, which is type A blood.

The second type: judge your possible blood type from your parents' blood type according to the genetic law.

Genes a and b are dominant genes, that is, they appear as a or b; O-type gene is an invisible gene. When it meets a or b gene, it does not show O type, but shows A or B; O gene only shows O blood when it meets O gene.

It's easy to know this. Blood type genes come from parents. The list is as follows:

Parents' O blood, children's O blood,

Parents type o and type a, children type a, type o,

Parents' blood types are O and B, children's blood types are B and O,

Parents' blood type b, children's blood type b, o,

Parent blood group a, child blood group a, o,

Parents' blood type AB A, children's blood type A, B, AB,

Parental blood type AB, child blood type b, a, AB,

Parents' blood types are A and B, and children's blood types are A, B, O and AB.

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Extended data:

Generally speaking, the blood type is unchanged for life. People's blood types are usually divided into four types: A, B, O and AB. Blood group inheritance depends on chromosomes in cells. There are 23 pairs of chromosomes in human cells, and each pair of chromosomes consists of two single chromosomes, one from the father and the other from the mother. The main component of chromosome is deoxyribonucleic acid, which determines genetic traits and functions, that is, DNA, which people often say. DNA can be divided into many small segments, each of which has specific genetic characteristics and functions. These small fragments are called genes. A small piece of DNA in the same position on two single chromosomes in a pair of chromosomes is called allele.

The gene locus of ABO blood group system is on chromosome 9. Human ABO blood group is controlled by three genes: A, B and O, but there are only two ABO system genes on chromosome 9 in each cell, which are a pair of alleles among AO, AA, BO, BB, AB and OO, in which A and B genes are dominant genes and O gene is recessive.

Reference link:/baike.baidu.com/item/%E8% a1%80% E5% 9e% 8b% E9% 81%97% E4% BC% A0% E8% A7% 84% E5% Be%. Fr = Aladdin "target =" _ blank "title =" Baidu Encyclopedia _ Table of Blood Type Inheritance Law "> Baidu Encyclopedia _ Table of Blood Type Inheritance Law.