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Blood Types Notes. Genetics—Co-Dominant Alleles. When writing genotypes for a person’s blood type, we use a different system of notation:. We use the letter Capital I—and then place superscripts for blood type on the letter. Type A: homozygous I A I A or heterozygous I A i
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Blood Types Notes Genetics—Co-Dominant Alleles
When writing genotypes for a person’s blood type, we use a different system of notation: • We use the letter Capital I—and then place superscripts for blood type on the letter. • Type A: homozygous IAIA or heterozygous IAi • Type A: homozygous IBIB or heterozygous Ibi • Type O: only homozygous recessive: ii • Type AB: only heterozygous IAIB