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Unformatted text preview: o 6 genotypes: homo A, Hetero A, Homo B, Hetero B, Hetero AB, Homo O o 4 phenotypes: A, B, AB, O o 3 alleles: A, B, O o single gene for antigen o O = universal donor o AB = universal receiver • Pleiotrophy o Single gene o Many phenotypes o Sickle cells leads to different phenotypes • Polygenic inheritance o 6 genes o none of 6 genes = white pigment o all of 6 genes = dark pigment • epistasis o gene at one locus affects phenotypical expression of another expression of a gene somewhere else o ex: yellow labradors have dark skin underneath but dark color does not get onto the hair pieces causing it to be yellow • environmental effects o temp changing color during early expressions of genes cooler = darker warmer = lighter o pH of flowers depend on its color but genetically identical • genetic diseases run in families o pedigrees...
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This note was uploaded on 03/17/2011 for the course BIO 110 taught by Professor Tudge during the Fall '09 term at American.
- Fall '09