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Whats your blood type?
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[quote:jimd:MV8yMTk5NjIzXzM3MjMzOTIwXzlGQjQ4NEM4] A baby's blood type can be different from the mother's blood type. It's all simple genetics--the child gets a mix of both parent's genes. Everyone has two copies of the "blood type" gene. A and B are both dominant over O. This is because the A gene makes the A antigen, and the B gene makes the B antigen, and the O gene doesn't make anything--it's basically just a placeholder. This means: AA and AO make type A blood. BB and BO make type B blood. AB makes type AB blood. OO makes type O blood. Now, each parent gives one of their copies to the child. Imagine that the mom has type A blood, with type AO genes, and the dad has type B blood, with type BO genes. Here are the possible mixes the child could get: A (mom) B (dad) : AB blood. A (mom) O (dad): A blood. O (mom) B (dad): B blood. O (mom) O (dad): O blood. So 25% of the time, this couple would have a kid whose blood type matches the father. Another 25% of the time, it matches the mother. Another 50% of the time, it doesn't match either of them. There are some mixes where the baby will *always* have a different blood type from both parents. For example, say the mother is type O, with OO genes, and the father is type AB, with AB genes. The possible mixes for this couple are: O (mom) A (dad): Type A blood. O (mom) B (dad): Type B blood. The child will never have the same blood type as either parent. The +/- part of blood types (like you see "B+" or "O-") refers to the Rhesus factor, which works in the same way. Everyone has two copies; + is dominant over -; + makes the Rhesus factor, and - doesn't do anything. Of course, this just uses simple genetics like you might learn as a kid. The real picture ends up being more complicated--other genes end up effecting the final blood type, random mutations, that sort of thing. Source(s): There are many "blood type calculators" that tell you what blood types the baby might have given the parent's blood types. All just use simple genetics. Here is an example: http://www.biology.arizona.edu/Human_Bio… [/quote]
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I've recently donated and i felt great afterwards! Felt like i just walked out of Church :) My blood type is A negative aka Rh negative. And for that Red Cross cause me special because of my blood type is only 6 percent of the U.S population, so blood from me is scarce. I feel the need to donate more and help others. And wish others to do so too!
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