This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
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...
View Full Document
- Fall '09