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21 answers

Actually, yes, if one parent is AO and the other parent is BO, then they have a 25% chance of having a type O baby...learned this in biology class...you have a 25% chance of having a type AB baby, a 25% chance of having a type A, and a 25% chance of having a type B

Vector, nice breakdown, but AO and AO would give you 50% AO, 25% AA and 25% OO (same applies to your BO and BO typing as well)

But yeah, for those of you that hinted to cheating, get your facts together...

2006-08-03 17:08:57 · answer #1 · answered by KnA 3 · 0 0

Boy, the state of math education nowadays....

Given one parent is type A and the other is type B, then the type A parent can have either AA or AO. The type B parent is either BB or BO. I don't know the relative frequency of AA versus AO or BB versus BO, so I'll assume 50%. If the A parent is AA, then there's zero chance of an O offspring. Similary, if the B parent is BB. The only chance of an O offspring is if one parent is AO and the other is BO. So right away, there's only a 25% chance of having the right parents. Now, for the AO and BO parents, as already explained, the probability is 25%.

Thus 25% of 25% is 1/16 or about 6.25%

Yes, a type A and a type B can have a type O child, but only 6% of the time, everything else being equal.

2006-08-03 19:05:19 · answer #2 · answered by George C 3 · 0 0

Abby is right! The heterozygous such as A X O (which is still type A) cross-recombined with the heterozygous such as B X O (which is still type B) will give you 1/4 of chance to have O X O (type O) homozygous.
Below is a brief summary of the formation of blood type.
If A X A + B X B ---> 100% AB
If A X O + B X B ---> There are 50% of AB and 50% of BO(Type B)
If A X O + A X O --> There are 50% of AA and 50% of AO (Both are Type A)
If B X O + B X O -->There are 50& of BB and 50% of BO (Both are type B)
If A X A + B X O --> There are 50% of AB and 50% of AO (Type A)
If A X O +B X O ---> There are 25% of AB, 25% of AO, 25% of BO and 25% of OO.

Is that clear?

2006-08-03 17:22:20 · answer #3 · answered by Vector_The Positivism 2 · 0 0

maybe- it depends on genetics and such. o is recessive. so if the type a's genotype was Ao and type b's was Bo then there's a 1/4 chance. So you'd have to go through the blood types for the last couple generations to see for sure. however both would have to have the recessive o gene-which is uncommon (hence the rarity of type o blood) but entirely possible.

if both parents had to have type o blood to have type o offspring there would be no such thing as type o because it would have died out a long time ago

2006-08-03 17:08:05 · answer #4 · answered by opi 4 · 0 1

no you could no longer. O neg and O neg would create O neg O constructive and O neg would create O constructive there's no way 2 mum and dad with the two O form ought to offer a B . here's somewhat tidbit from a scientific dictionary. each blood form stated as the ABO element there is an antigen on each erythrocyte. there is the two an A B AB or O The "O" blood form does not have the two the A or B element "Antigen" On it. So it may be fairly impossible to would desire to "O" mum and dad create a B new child appears like there's a distinctive father. If one confirm is "o" form and the different(father subsequently) is B then the new child would have "0" typing or could have "B" typing. i'm hoping you understood what I in simple terms typed and that i didnt confuse you .

2016-09-28 21:30:53 · answer #5 · answered by ? 4 · 0 0

Yes.

If one parent is AO and the other is BO they can produce all four blood types:

AO => type A
BO => type B
AB => type AB
OO => type O

Two AB parents can NOT produce an offspring with type O

Two O parents can ONLY produce offspring with type O

2006-08-03 17:38:53 · answer #6 · answered by Doom Lord 2 · 0 0

Highly unlikely, the child would either be one or the other. However, there are certain cases in which both parents would be considered "flukes", meaning that a majority of their parentage is say, type O, but by a twist in nature, they came out as another type. The odds of two flukes coming together and producing a child, in their cases, "normal", could "possibly" happen, but probably not.

2006-08-03 17:13:44 · answer #7 · answered by classyjazzcreations 5 · 0 1

Yes, but both have 2 be heterozygous.
AO * BO - AB, AO, BO, OO.
Hence, there are 25% chances.
Remember that A & B r codominant(equally dominant) while O is recessive.

2006-08-03 23:06:26 · answer #8 · answered by whatever 2 · 0 0

no, both parents need to have type O blood to have offspring with type O.

2006-08-03 17:08:28 · answer #9 · answered by Melissa R 4 · 0 1

yes there is 50% chance that they will bear a type"O" offspring..AO+BO="O","A","B" (these are the possible blood types that A and B could bear)

2006-08-03 17:14:13 · answer #10 · answered by cantonensis 2 · 0 0

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