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Multiple Alleles, Multiple Genes, and Lethality. Multiple Alleles Multiple Genes Lethality. A. Multiple Alleles. Examples: ABO blood groups in humans Coat color in rabbits Genetic polymorphism vs. genetic monomorphism Major histocompatibility complex (HLA in humans) Story of the cheetah.
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Multiple Alleles, Multiple Genes, and Lethality • Multiple Alleles • Multiple Genes • Lethality
A. Multiple Alleles • Examples: • ABO blood groups in humans • Coat color in rabbits • Genetic polymorphism vs. genetic monomorphism • Major histocompatibility complex (HLA in humans) • Story of the cheetah
B. Multiple Genes • Example: • Comb shape in chickens • Purple flower color in peas (an example of epistasis)
C. Lethality • Example: • “Creeper” chickens