Both husband and wife have blood type O, what blood type will the child be born

It must be O-type.

Blood type of both parents Blood types that may occur in children Blood types that cannot be present in children are aa a, o b, ab

aхo －－a，o －－b，ab

aхb －－a，b，ab,o

aхab －－a，b，ab－－－o

bхb －－b，o －－a，ab

bхo －－b，o －－a，ab

bхab －－a，b，ab －－o

abхo －－a，b－－－ab，o

abхab －－a，b，ab －－o

oхo －－o －－a，b，ab

o Human blood types are usually divided into four types: A, B, O, and AB. Blood type is inherited 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 deoxyribonucleic acid, which determines genetic traits and functions, which can be divided into many small segments, each of which has specific genetic traits and functions, and these small 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 the 9th pair of chromosomes in each human cell, namely a pair of alleles in AO, AA, BO, BB, AB, and OO, in which A and B genes are dominant genes and O genes are recessive genes. The genetic pattern of the ABO blood group system is shown in the following table:

Parent's blood type Child's blood type The child's undesirable blood type.

o＋o o a、b、ab

o＋a a、o b、ab

o＋b b、o a、ab

o＋ab a、b o、ab

a＋a a、o ab、b

a＋b ab、a、b、o

a＋ab a、b、ab o

b＋b b、o a、ab

b＋ab a、b、ab o

ab＋ab a、b、ab o

Blood type A is made up of AA or AI

Blood type B is made up of BB or BI

The composition of blood type O is II

The composition of blood type AB is AB

A and B are explicit, and I is recessive, so it's OK to calculate it yourself.

There is only o possibility.

I don't know this?

Stupid to death. It should be blood type 8.

There is an o on the top and an o on the bottom

That is: 8

Type O, from the biology textbook of the sophomore year of high school, is said. Of course, if there is a genetic variation, it is difficult to say.

Type O, because blood type is hereditary.

Both husband and wife are type O, and the woman has to do RT hemolysis test when she is pregnant, which is more than other blood types anyway.

People with blood type O do not have either type A or B antigens on the surface of red blood cells. Their serum produces antibodies to both antigens. Therefore, a person with blood type O is a well-suited blood donor.

However, they can only accept blood from the same blood type. For example, a person with type O can only receive blood from type O.

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.

However, there are only two ABO system genes on the 9th pair of chromosomes in each human cell, namely a pair of alleles in AO, AA, BO, BB, AB, OO, where the A and B genes are dominant genes and the O gene is recessive genes.

The chromosomes on the somatic cell are called homozygous if the alleles from both parents are the same (for example, the alleles A and A on some type A chromosomes): if the contents of the genes are different, they are called heterozygous, in other words, each body, at a certain locus, has two and only two alleles, and each allele comes from one of the parents.

The male has blood type O, the female has blood type O, and the child born is blood type O.

Blood type is controlled by the two genes of the parents, and the blood type of the child will show dominant genes. Generally, there are three genes that control blood group: A, B, and O, of which A and B are dominant, and O is recessive (AB type is called co-dominance).

According to the theory of genetic biology, blood type O is recessive, and female blood type O and male blood type O can only give birth to children with blood type O.

Type O. Blood groups are divided according to the "presence of antigen A and antigen B on the red blood cell membrane": only antigen A is type A on red blood cells, only antigen B is type B, and if there is both A and B antibodies, the principle is type AB, and those without both antigens are type O.

Blood type is the outward manifestation of inherited genes. Because the genes that determine blood type are a group of dominant genes, the same blood type may correspond to multiple gene types.

Both O and AB blood types correspond to only one gene type, which is OO and AB.

The combination of oo and oo gene type can only get one result, that is, the oo gene type, that is, blood type O, so the child's blood type is type O.