blood type O- What this means?

My college had a health fair today, and offered a free blood type analysis. As I was waiting for the results, the lady doing the test said if mine was O- she would strap me down and make me donate some! Sure enough, it was O-. Is this blood type rare? What makes it so special?

The RH factor makes your blood type rare. Only about one in 15 people are O-. You should be thanking your stars you are not AB negative. It is the rarest blood type. Only one in 167 people are AB negative. I think they can store rare blood types for up to 10 years. Normally blood is only stored for 6 weeks and then it is disposed of.

In my youth, a friend of mine was an entomology student. He used to get expired blood from blood banks and feed it to his (i.e. the university's) insects.
 
The RH factor makes your blood type rare. Only about one in 15 people are O-. You should be thanking your stars you are not AB negative. It is the rarest blood type. Only one in 167 people are AB negative. I think they can store rare blood types for up to 10 years. Normally blood is only stored for 6 weeks and then it is disposed of.

In my youth, a friend of mine was an entomology student. He used to get expired blood from blood banks and feed it to his (i.e. the university's) insects.

O- is also the universal donor. O+ is popular for a similar reason.

I and my daughter are O+, my wife and my son are O- which suggests that I probably carried the rhesus negative recessive gene.
 
I am an AB+ blood type and my children's father was an A, when I learned that my son was B- I thought how in the hell did this happen. For years I thought that if both parents were positive that their children would also be positive but I have living proof that this is not true.
 
I am an AB+ blood type and my children's father was an A, when I learned that my son was B- I thought how in the hell did this happen. For years I thought that if both parents were positive that their children would also be positive but I have living proof that this is not true.

I am also AB+... But, my dad was O-, and my mom was AB-... Figure that one out. Two negatives created a positive. I wonder what blood type our old mailman was? Hmmm.
 
I am an AB+ blood type and my children's father was an A, when I learned that my son was B- I thought how in the hell did this happen. For years I thought that if both parents were positive that their children would also be positive but I have living proof that this is not true.
My recollection is that rhesus factor is a classic dominant/recessive trait.

If both you and your husband both have family members that are rhesus negative, then you will carry the rhesus negative genes as a recessive trait, consequently, there is a 25% chance that one of your kids will be Rh-.
 
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