Is a child's blood type the same as his father?

Answer 1

A child's blood type is determined by what genes they inherit from their parents. We get two genes for blood type, one from mother and the other from the father. The child may be the same as the dad but other blood types are possible.

Answer 2

Nope, it is not always the father's blood type. But the child's blood type IS related to the parents. The basic rules are that the kid can only have a blood type with the same alleles as the parents, or with no alleles at all (type O).

So, for example, if both parents are type A, the kid can only be A or O. It gets a lil trickier with AB. Theres a website with a calculator that can give you all the possibilities here:

Answer 3

No. My father has type A+. My mom is B+. I have 8 brothers and sisters. Here's how our blood types ended up.
4B+, 1AB+, 2 A+, and I think the twins were O. I still remember the class I took in biology. Your parents have A, B, AB or O blood. O is simply the absence of both the A and B alelles. If both parents have O blood then the only blood type you can have is O. If Both have B blood you have 2 choices-either B or O blood. If both parents have A blood then you can have O blood or A blood. If either of your parents have AB blood then you could have A or B or AB, but it is then impossible for you to have O blood, because one of the alelles would have been passed on to you.

Answer 4

Blood types 101
We have two genes/chromosomes (whatever) that determine blood type and two for Rh factor.
O is recessive, A & B are dominant.
For example, my blood type is O, so both of my genes are O because if one was anything else, that type would be dominant over the O.
Therefore someone who is O must have O and O
But anyone who is A can be either A and A or A and O
Same with B
Anyone who is AB has 1 A and 1 B
Rh works similarly: Rh is dominant, so if you are Rh negative (no Rh factor), then both genes are negative.
Rh positive can be Rh+ and Rh+ or Rh+ and Rh-

Someone who has AA marries someone who has AA. All their kids will have AA.
Someone who has AO marries someone who has AA. Statistically, 2 kids in 4 will have AA, 2 kids in 4 will have AO.
It works the same way with B
If someone who has AB marries someone with AB, 1 in 4 kids will have AA, 2 in 4 will have AB, 1 in 4 will have BB.
Someone with AA marries someone with BB, all the kids will be AB. They can only get A from one parent and B from the other.
Have I confused you enough yet?

Answer 5

not necessarily.
blood type is determined by both the mother and the father.
there are two alleles (two parts basically) that make up your genotype. then there are 3 choices for each part, a,b and o. these letters refer to certain proteins in the blood and determine the type, a for a proteins, b for b proteins and o for no proteins.

if you are an a blood type this means your genotype could either be aa or ao. if your b bloodtype your genotype could be either bb or bo. if your blood type is o then your genotype has to be oo. if your bloodtype is ab then your genotype is ab (containing both proteins.)

so if a mother has type a blood and her genotype is aa and the father has type b blood and his genotype is bb, then the child has to have ab blood with proteins from both parents.

lets do another one! if a mother has type a blood and her genotype is ao and the father has type b blood and his genotype is bo the child has a 25% chance of being o, and 25% chance of being a, a 25% chance of being ab and a 25% chance of being b.

ao(mother) x bo (father)

a o
b ab bo
o ao oo


in this case the child has a 25% chance of having the same blood type as his father.


this is basic mendelian inheritance and allows us to determine the chances of a trait being passed on. this does not work with all aspects of our phenotypes (how we look... how are genes are expressed). some aspects of ourselves are controlled by multiple genes with multiple choices for alleles. fortunately blood type isn't one of these. but eye color is and body type is too.



check out this site to learn more about mendelian genetics
http://en.wikipedia.org/wiki/Mendelian_inheritance

Answer 6

Not necessarily. The mother also contributes to the child's blood type.

The child will have the same blood genotype as its father if its father and mother have the same blood genotype.

Answer 7

Not necessarily. I'm thinking there is a complicated scientific explaination involving recessive and dominant genes, but to make it simple, a child can take after either one of his parent's blood type, or a different one altogether. Mine, however, happens to be the same as my father's, so it does happen I guess. Hope I helped =)

Answer 8

Depends on the stronger blood type. If you are colored there will be a strong gene of blood type to the child. But apart from that the child will carry both mother and father. But some genes in the blood will show on looks. Ive got my mothers and dads of course and they were both strong and it come out in me and thats why im a Powerlifter. Cheers

Answer 9

Not in all cases..the child could have his mothers blood type as well. But the childs dna is made up of both parents together.

Answer 10

not necessarily, blood type follows Mendelian genetics. What is the fathers blood type? What is your blood type? A and B are both dominant alleles and O is a recessive allele.