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What is the rarest type of blood in human beings?
There are 30 human blood group systems that are recognised. In the commonly used ABO and Rh system the blood type AB- is the least common with never more than 1% of the population of a country having this type of blood.
Why is the white snow leopard the rarest?
yes they are the second rarest animal in the world, the first is the Japanese dolphin.
What is the rarest blood type and why?
Every country has a different blood grouping system.The rarest blood type in the world is by far considered AB negative. This has supposibly been caused due to it not expressing the H antigen on the red blood cells.
Rarest blood group in world?
According to the Standord University School of Medicine, the rarest blood type is AB Rh Negative, with only .6% of the United States having this type. That is roughly 1 out of every 167 people. However, some suggest an ultra-rare type known as "Bombay Blood." There have only been a handful of reported cases of humans known to have this blood type. This could be the result of a slight mutation, though. Stanford - http://bloodcenter.stanford.edu/about_blood/blood_types.html "Bombay Blood" - http://www.everything2.com/index.pl?node=blood%20type Hope this Helps!
What are the top three rarest blood types?
AB- is the most rare, roughly .5% (yes, half of a percent) of the world population has it B- is the second most rare, with 1.5% of the world population having it, A- is the third most rare, with 3.5% of the world population having it
What is the second rarest gemstone in the world?
Red beryl, also known as bixbite, is considered the second rarest gemstone in the world. It is a highly sought-after gemstone due to its vibrant red color and limited availability, primarily found in Utah, USA.
What is the rarest blood type?
It really does depend on the population in the U.S. but it has been stated that the rarest blood type is AB-. This is according to the American Red Cross
What is the most rare blood type?
O positive is the more rare and the most needed blood type in the world according the Red Cross. It is also the most compatible with other blood types. People with this rare blood type are encouraged to give blood whenever possible so that large quantity will be in supply for those needing blood transfusions.
How common is o positive blood type?
The rarest common blood type is AB negative. However, there have been some rare blood types discovered which fall out of the A/B Antigen, Rh +/- system normally used to distinguish blood types. O negative is not the rarest blood type, although it is frequently the most sought-after by blood banks, such as the Red Cross, because it can be given to virtually anyone.
Is a positive blood rare?
No, positive blood types are actually quite common. The most common blood type in the world is O positive.
What are the percentages of the different blood types among the world population?
Overall in the world, B is the rarest, with only 16% of the populous having this type. Approximately 21% of people have A type blood. And approximately 63% of the world's populous have O type blood.
What is the second rarest animal in the world?
The Javan rhinoceros is considered the second rarest animal in the world, with estimated population numbers in the low double digits. This critically endangered species is only found in Ujung Kulon National Park in Indonesia.
