2007-02-17 07:53:25 · 19 answers · asked by ark1244 1 in Family & Relationships ➔ Other - Family & Relationships
no , doesnt have to be the same, usually it is but its not a rule u know ....some are the same as their mother som as the father and some are some kind of a mixture of both u know...it differs...my brother is an O i'm AB
2007-02-17 08:09:13 · answer #1 · answered by me 3 · 0⤊ 0⤋
the short answer - no they shouldn't. here's why:
We each carry two genes for our blood type. Those can be A, B, or O. The parent with the O blood type has an O for both copies. The parent with the B blood type can have a B for both copies, or can have a B and an O. {The O is "silent" if there's an A or a B present also.}, and A blood type is the same.
Each parent gives one of their two copies to their child, so depending on the blood type of the parents, it's very likely that all three children could have different blood types. If you need further clarification do a search on "+parent +blood +type". There's some really good tutorials online that will help heaps.
2007-02-17 16:00:18 · answer #2 · answered by J L 2 · 0⤊ 0⤋
Absolutely not --
Every person has a blood type, (O, A, B, or AB) and an Rh factor, either positive or negative. The blood type and the Rh factor simply mean that a person's blood has certain specific characteristics. The blood type is found as proteins on red blood cells and in body fluids. The Rh factor is a protein that is found on the covering of the red blood cells. If the Rh factor protein is present on the cells, the person is Rh positive. If there is no Rh factor protein, the person is Rh negative. The following are the possible combinations of blood types with the Rh factors:
Blood Type A B O AB
Rh positive A+ B+ O+ AB+
Rh negative A- B- O- AB-
Rh factors are genetically determined. A baby may have the blood type and Rh factor of either parent, or a combination of both parents. Rh factors follow a common pattern of genetic inheritance. The Rh positive gene is dominant (stronger) and even when paired with an Rh negative gene, the positive gene takes over.
If a person has the genes + +, the Rh factor in the blood will be positive.
If a person has the genes + -, the Rh factor will also be positive.
If a person has the genes - -, the Rh factor will be negative.
A baby receives one gene from the father and one from the mother. More specifically, consider the following:
If a father's Rh factor genes are + +, and the mother's are + +, the baby will have one + from the father and one + gene from the mother. The baby will be + + Rh positive.
If a father's Rh factor genes are + +, and the mother's are - -, the baby will have one + from the father and one - gene from the mother. The baby will be + - Rh positive.
If the father's genes are - -, and the mother's are - -, the baby will be - - Rh negative.
If the father's genes are + - Rh positive, and the mother's are + - Rh positive, the baby can be:
+ + Rh positive
+ - Rh positive
- - Rh negative
2007-02-17 16:04:07 · answer #3 · answered by GrnEyedBlondeSwede 2 · 1⤊ 1⤋
Not necessarily. There are three genes for blood types out there: A, B, and O. You get one from each parent, and A and B are both dominant, so a person can be one of four blood types: type A (either AA or AO), type B (BB or B0), type AB (AB), or O (OO). That means if you and your husband are both type A or B but have a gene for O, one out of four of your kids are likely to be type O. If one of you is A with a gene for O and the other is B with a gene for O, then your kids are equally likely to be any of the four blood types.
2007-02-17 16:31:23 · answer #4 · answered by curiousme 3 · 0⤊ 0⤋
not neccessarily! the parents may have two different blood types and I also think that if one parent has A or O then their offspring can be any type except for a neg. It's been a while since I learned this stuff. Just as I learned two brown eyed people can have a blue eyed baby but two blue eyed people can never have a brown eyed baby.
2007-02-17 16:01:18 · answer #5 · answered by Lisa C 2 · 0⤊ 0⤋
Not necessarily. I don't know enough about the genetics but blood type can and often will be different in siblings. Just like a blond woman will not always give birth to all blond children.
2007-02-17 15:58:31 · answer #6 · answered by killintimer 5 · 0⤊ 0⤋
No, only if the parents were both homozygous...theres 3 types of blood, A, B, and O, and if one parent is homozygous (AA,BB,OO) and the other parent is heterozygous(AB,AO,BO), there are two possible types of blood for the kids. If both parents are heterozygous, (AB,AO,BO), theres 4 (or 3) different possible blood types for the kids
2007-02-17 16:00:57 · answer #7 · answered by bksrbttr 3 · 0⤊ 0⤋
the blood type can be different . There was a story out about a missing kid and the parents didn't know her blood type. There were siblings and it was their kid. So if you think your spouse had an affair and the kid isn't yours, you need more proof than this.
2007-02-17 16:02:49 · answer #8 · answered by greenfrogs 7 · 0⤊ 0⤋
Nope, They are all different, Now if you have O+ and your whole family has O+ and He and his family have O+ blood type then maybe just maybe they would all have O+... but whats the chances of that? NONE! All of my girls blood types are different.. My youngest has my moms blood type and my oldest child has my blood type and my middle child has my husbands blood type.. I hope this was helpful!!!
2007-02-17 15:57:50 · answer #9 · answered by csmutz2001 4 · 0⤊ 0⤋
no i don't think they do all have to have the same blood type i think if the parents have different bllod types the children may have different blood types but they would be like one of their parents.
2007-02-17 15:58:55 · answer #10 · answered by kazz06 4 · 0⤊ 0⤋