2007-01-17 02:58:28 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Our parents, it's genetically determined.
2007-01-17 03:03:01 · answer #1 · answered by Oona 3 · 0⤊ 0⤋
Blood type is always genetically determined. A and B are dominant, and O is recessive. It's very simple.
Someone who is genotype AO or AA has A.
Someone who is genotype BO or BB has B.
Someone who is geonotype OO has O.
Someone who is genotype AB has AB.
The Rhesus system is independent - positive is dominant and negative is recessive.
2007-01-17 09:57:44 · answer #2 · answered by stormsinger1 5 · 0⤊ 0⤋
Our blood type is genetically determined. We inherit it through heredity by our family.
2007-01-17 04:00:14 · answer #3 · answered by lemon drops 3 · 0⤊ 0⤋
Blood types are inherited except when a rare mutation occurs.
2007-01-17 03:21:43 · answer #4 · answered by Kes 7 · 0⤊ 0⤋
family! it's genetically determined
2007-01-17 03:17:04 · answer #5 · answered by desT 2 · 0⤊ 0⤋
definitely genetic. from family.
2007-01-17 03:13:08 · answer #6 · answered by illustration 3 · 0⤊ 0⤋
sometimes family and sometimes random.
2007-01-17 04:24:09 · answer #7 · answered by nit 2 · 0⤊ 1⤋