BLOOD TYPES and CODOMINANT TRAITS
Traits with MULTIPLE ALLELES (like ABO blood types) are traits that have 3 or more alleles possible at a gene location on your chromosomes. Alleles “IA” and “IB” are CODOMINANT to the” i” allele. IA allele causes enzyme activity to create a variant sugar on the surface of red blood cells. IB causes enzyme activity to create a different variant on the red blood cell surface. “i” lacks the enzyme activity and does not cause any change to the red blood cell surface.
Please complete the following table according to the information in your text on page 244 and from your instructors.
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BLOOD PHENOTYPE |
ANTIGEN ON RBC SURFACE |
BLOOD |
CAN DONATE TO BLOOD TYPES |
CAN RECEIVE BLOOD FROM |
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A third antigen was discovered to be on RBC surfaces and called the Rh factor, since it was first discovered in Rhesus monkeys. If you are Rh + you will have a potential antigen that is non-self to people that are Rh – and lack the antigen.
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BLOOD PHENOTYPE |
ANTIGEN ON RBC SURFACE |
BLOOD |
CAN DONATE TO BLOOD TYPES |
CAN RECEIVE BLOOD FROM |
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Your ABO & Rh
BLOOD TYPE |
Your BLOOD GENOTYPE |
Your SPOUSE’S |
Your SPOUSE’S |
EXPECTED PHENOTYPIC RATIO |
EXPECTED PHENOTYPIC RATIO |
PEDIGREE OF THE RESULTS OF YOU HAVING
4 CHILDREN (coin tosses) |
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