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Review the factors affecting the phenotypes of Mendelian charaters: incomplete dominance,
co-dominance, multiple alleles, pleiotropy, polygenic inheritance, environmental effect, epistasis, and epigentics with examples.
1. Using the multiplication rule, calculate the probabilities of each genotype occurring from a given cross.
2. Using the multiplication rule and the addition rule, calculate the probabilities of a certain combination of genotypes occurring as the result of a genetic cross.
3. Distinguish between incomplete dominance and codominance, multiple alleles and pleiotropy, epistasis and polygenic inheritance.
4. Explain how each of the following impact the phenotype; incomplete dominance, codominance, multiple alleles, pleiotropy, epistasis, polygenic inheritance, environmental influence.
5. Explain the role of the environment in the phenotypic range of some genes.
In humans, the ABO blood system is controlled by multiple alleles. The Ia antigen allele produces A, B antigen Ib alleles and allele i produces no antigen. The dominance hierarchy is Ia = Ib> i. A) A person's blood group 0 can give you an AB blood person?. Clearly explain your answer (presence or absence of antigens or antibodies).
