Type ___ blood is the universal donor. Type ___ blood is the universal recipient.

1) Type O blood is the universal donor.

People with type O- blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group

2) Type AB blood is the universal recipient .

AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.7

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c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.