What kind of blood type can give birth to what kind of blood type, and how is the blood type inherit

Blood group is a classification based on differences in antigens of the same family on the surface of human red blood cells. Because human red blood cells contain different agglutinogens, the blood is divided into several types, so it is called blood type. There are many types of human blood types, and each blood group system is determined by genetic factors and has immunological properties.

The most common blood group system is ABO blood group, which is divided into four types: A, B, AB, and O. followed by the Rh blood group system, which is mainly divided into Rh-positive and Rh-negative; The second is the MN and MNS blood group system. According to the current clinical testing at home and abroad, more than 30 human blood types have been found. blood groups blood types) is a genetic trait that manifests itself in the form of blood antigens.

The chromosomes on the somatic cell are called homozygous if the alleles from both parents are the same (e.g., the alleles A and A on some type A chromosomes): if they contain different gene contents, they are called heterozygous (e.g

Some type A human chromosomal alleles are A and O). In other words, every individual, at a certain locus, has two and only two alleles, each from one parent. If the genes from both parents are identical, the individual is called homozygous, or heterozygous if they are not.

Whether homozygous or heterozygous, the sum of genes on a pair of chromosomes is called the genetic formula. For example, the genetic formula of the above two types of people is AA and AO respectively. However, not all inherited genes are expressed, and traits that can be expressed are called expressions.

For example, regardless of the inheritance of AA and AO, the expression is A, <>

In general, blood type is constant throughout life. Human blood types are generally divided into four types: A, B, O, and AB. Blood group inheritance is done with the help of chromosomes in cells.

There are a total of 23 pairs of chromosomes in a human cell, and each pair of chromosomes is made up of two single chromosomes, one from the father and the other from the mother. The main component of chromosomes is the deoxyribonucleic acid, commonly known as DNA, which determines inherited traits and function. DNA can be divided into many segments, each of which has a specific inherited trait and function, and these segments are called genes.

A small fragment of DNA in the same position on two single chromosomes in a pair of chromosomes, called an allele.

The locus of the 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 human cell, that is, a pair of alleles in AO, AA, BO, BB, AB, OO, where A and B genes are dominant genes and O genes are recessive genes. The genetic pattern of blood group is shown in the ABO blood group genetic pattern table below:

Genetic patterns of blood groups - Table of genetic patterns of blood groups.

Parent's blood type The blood type that the child will have The blood type that the child will not have O and O o a, b, ab

a with o a, o b, ab

A vs. a a, o B, ABA vs. B A, B, ab, O

a with ab a, b, ab o

b vs. o b, o a, abb vs. b b, o a, abb vs. ab a, b, ab o

ab with o a, b o, abab with ab a, b, ab o

Genetic patterns of blood groups - Table of genetic patterns of blood groups.

Teach you a matching template: There are two types of blood genes for type A, AA or AI, two types of type B, BB or BI, type O, one type II, and one type ABList the blood types of the parents and split them (for example, type A is divided into A and A, A and I), and then take out the combination of the mother's and the father's one, list all the possibilities, and then compare the above genotypes to get the child's possible blood type!

1. The blood type of the child must be a combination of the genetic material of the blood type of both parents, not unilateral inheritance.

2. There are many genes in the human body, and the blood group gene and the appearance gene are different genes, and there is no necessary connection between them.

Therefore, the sentence "whose blood type a child inherits will grow to think about whom" is wrong!

When a woman becomes pregnant, her NDA is transmitted to the fetus through genetic factors.