Wednesday, February 15, 2012

Distribution of Blood Type Frequencies


Let's say you have a blood type A+ living in Iceland needing a blood transfusion. Well, you may need to go to Norway to get your blood transfusion. A study has shown that there is a difference in frequency of the blood types in different races and countries. European descendents have a high A frequency and a very low B frequency. However, Asians have both high A and B frequency. This happened because different ethnic groups married within villages and ethnic groups; they did not mix frequently way-back-when. With globalization, it's going to be interesting to see how the frequency changes within the next 100 years. Below is a table that shows the distribution of blood type frequencies within different countries.   
http://mihow-assets.s3.amazonaws.com/assets/2009/04/bloodtypes.png

http://www.rhesusnegative.net/work/breakdown-of-frequency-of-blood-type-per-country/

1 comment:

John Latto said...

That's interesting. Coincidentally I was looking at just such info today because, in anther class, a student had mentioned the blood group diet (google it if you are curious - basically it suggests certain blood groups should specialize on certain foods).

I'd assumed this was a fairly bogus idea but there may be some truth behind it because the blood groups are geographically clustered as you indicate. So basically the blood group diet is saying that if your ancestors came from, say, the Mediterranean it may be wise to eat foods associated with this region if you evolved adaptations to specialize, or even require certain foods.

Experts are still divided though.