Both parents have blood type A, must the child be type A?

This one is for sure, and absolutely!

Blood group genetic relationship.

There are many different types of blood in humans, and they are very complex. What we usually call red blood cell blood groups: A, B, O and AB, actually belong to a blood group system, called 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 earliest and most relevant to humans.

There is a genetic basis for blood type. Half of a person's blood type comes from the mother and half from the father. For example, if the mother passes on the B factor to the offspring and the father passes on the O factor, the offspring's blood type is Bo, and because O is recessive, only B type is exhibited.

According to the law of blood group inheritance, the blood type of the parents is known. It can be deduced that the child may or may not be of that blood type, which can provide some reference value in the forensic evaluation of parental authority. If you're interested, find out what your child's blood type is.

Please see the table of genetic relationships of blood groups).

Babies whose parents have type A blood type A in their parents;

Babies whose parents have type A, B, or AB blood types in their parents with type B and have obtained blood type A, B, or AB;

Babies whose parents have type A and O blood types in their parents have type A and O blood;

Infants whose parents have type A and whose parents have AB blood type A or AB blood type;

Babies with type B blood in both parents with type B blood;

Babies with type B and O blood types from both parents to O;

Babies with type B and AB blood types;

Babies with type O blood in both parents and O in both parents;

Babies with type O blood and AB blood in their parents' AB type;

Babies with AB blood type to AB in both parents.

Not necessarily, it is possible to develop blood type O.

Marriage type The blood type that the child may have The blood type that the child cannot have is a a, o b, ab

a b a, b, o, ab none.

a×ab a、b、ab o

a×o a、o b、ab

b×b b、o a、ab

b×ab a、b、ab o

b×o b、o a、ab

ab×ab a、b、ab o

ab×o a、b ab、o

o×o o a、b、ab

It can be type A or it can be type O blood but the former is more likely.

It can't be type B or AB.

Yes, if your parents have different blood types, you and one of your parents have the same blood type!

Not necessarily. Because sometimes there are changes.

Not necessarily a or o biogenetic point of view.

A blood type parents can be either Ao or AA, so the child can be either A or O.

It may be type O or type A, but it is more likely to be type A.

Both the father and the child have blood type A, so there are three types of blood type for the child's mother: blood type A, B, and O.

1. The probability of a father and a mother of blood group A giving birth to a child is 15 16.

2. The probability of a father with blood type A and a mother with blood type B giving birth to a child with blood type A is 3 16.

3. The probability of a father with blood type A and a mother with blood type O giving birth to a child with blood type A is 3 4.

A, B, and types are all possible.

The genotypes of blood types are: blood type A, blood group AA, or AOB blood type BB or BO

Blood type AB AB

Blood type O oo

If the child genotype is AA, then the mother can be blood type A or AB, and if the child genotype is AO, then the mother can be either blood type.

1. Generally speaking, there are four types of human blood types: type A, type B, type AB, and type O. There are three i(a), i(b) and i that determine human genes, and each person consists of two genes, i is the recessive gene, and i(a) and i(b) are both dominant to i, so the human blood type is like this:

Type A [I(A)I(A)], type A [I(A)I], type B [I(B)I(B)], type B [I(B)I], AB, O [II], are 6 blood types;

2. When the blood type of the parents is type A and type B, the genes are paired in pairs, and it is possible to give birth to 4 completely different blood types A, type B, type AB and type O;

3. Speaking of the question you mentioned, if both the father and the son have blood type A, then the son's blood type must contain one I(A), then the other can be two genes, I(A) and I, and if you work backwards, the mother's blood type may contain one of the two genes I(A) or I, then type A [i(a)i(a)], type A [i(a)i], type B [i(b)i], type AB, type O [ii] It is possible in all four blood types, that is, all four blood types are possible, but it will definitely not be a purely dominant type B [i(b)i(b)].

All four blood types A, B, O, AB are possible.