I understand that, "A" blood carriers could have a genotype of "AO", but if a stain were left behind, it could not be just "O" correct?
2007-07-21 07:27:48 · 3 answers · asked by zillenium_00 3 in Science & Mathematics ➔ Biology
Yes, it is possible, but not in a way you would expect.
There is a rare gene in the human body, that when expressed, it "masks" the blood type of an individual. No matter what blood the person has, when it is tested, it will exhibit an 'O' blood type. This is called the "Bombay Phenotype"... meaning a person that has A Blood will exhibit 'O' Blood
It is very difficult to test for someone having a "Bombay phenotype" so most of the time, it will go unnoticed. Even the person him/herself will not know.
In your question above... YES... The person can have 'A' blood, and yes, if he leaves a stain behind (and he has Bombay phenotype), it will be an 'O' blood stain.
2007-07-21 16:33:02 · answer #1 · answered by theviolet41 6 · 0⤊ 0⤋
No.
All the blood left by that person would be type A.
Type A blood has a certain A protein on the surfaces of all the red blood cells, not just half of them, so this can't happen even by the wildest coincidence.
2007-07-21 11:05:38 · answer #2 · answered by ecolink 7 · 0⤊ 0⤋
No, doesn't work that way. to help he relate it better....it's like saying all oranges are fruit, but not all fruit are oranges! But the answer is no.
2007-07-21 07:36:02 · answer #3 · answered by Anonymous · 1⤊ 0⤋