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How many blood types are there?

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There are 4 different blood types (A, B, O, & AB). Each blood type can either be Rh positive or Rh negative. (e.g., A+, A-, B+, B-, O+, O-, AB+, AB-).

Blood type AB is the universal receiver when it comes to donating blood. That means anyone can donate blood to a person with AB blood.

Blood type O is the universal donor, which means that anyone can take O blood. '

All other blood types can only be donated to their specific blood type (i.e. A-A, B-B.)
A B AB O, each of which can be positive or negative, for a total of eight.
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How many alleles are there for blood type?

There are three alleles for blood type: IA=Blood type A IB=Blood type B i=Blood type O The alleles for blood type A and B are codominant so when someone contains the IA and I

What are and how many blood types are there?

1.Type O, Type A, Type B, and Type AB. There are four types of blood, not three. 2. Each of the four blood types are classified as Rh positive or Rh negative. 3. It is con