then why is my blood type O- ?
2006-11-06 09:03:07 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Blood type has to do with chemical markers on your cells called antigens. People with type A blood have A antigens, and people with type O blood have no antigens. A person has two genes controlling blood type, one from each parent. Both your parents have the genotype AO. Because they have the gene for A, they produce the antigen for that blood type. However, you inherited the recessive gene from both your mother and your father (genotype OO) and therefore have no antigen-producing genes. This makes you type O.
Therefore, if your spouse also has type O blood, then any chidren you produce would also have to be type O. The person above me is either mistaken about her parents' bloodtypes or the identity of her parents.
The RH factor (+/-) works in a similar fashion.
2006-11-06 09:13:15 · answer #1 · answered by answerator 5 · 2⤊ 0⤋
Well I have kind of the same thought my blood is A+ and my whole family my mom, dad and 3 sisters are O+ so I don't really know why myself can anyone help me to?
2006-11-06 09:06:51 · answer #2 · answered by beautiful 2 · 0⤊ 0⤋
because A blood type is really AO blood type. So, if both of your parents are AO you got an O from each parent. It's called genetics.
2006-11-06 09:06:50 · answer #3 · answered by :) 3 · 3⤊ 0⤋
simple...the gene for A+ is dominent, so that means that they can both A+ and an O- gene. It seems that U just happened to get both O- genes. Then again if you were adopted..........
2006-11-06 09:39:46 · answer #4 · answered by Eventfully 3 · 0⤊ 0⤋
Maybe your mom had an affair... only kidding. Your parents are heterozygous for the A allele (eg A/O).
2006-11-06 09:06:09 · answer #5 · answered by adops10 2 · 0⤊ 0⤋
Your mom cheated on yur dad
2006-11-06 09:05:51 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Have you never heard of dominant and recessive genes?
2006-11-06 09:06:20 · answer #7 · answered by Anonymous · 0⤊ 0⤋