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10/31/2011

Mendelian Gentics II

QuestionAnswer
Law of Independent Assortment Different traits are inherited independently
Epistasis One gene affects the expression of another
Polygenic Inheritance Many genes contribute to phenotype
Pleiotropy One gene has several effects on phenotype(e.g. Sickle-cell disease)
Co-dominance Both alleles have effects
Aa x Aa = 1/4 AA, 1/2 Aa, 1/4 aa
AA X Aa = 1/2 AA, 1/2 Aa
Monohybrid Cross Crossing two individual heterozygotes for one character (e.g. flower color)
Dihybrid Cross Crossing two individuals who are both heterozygotes for two traits.
Imcomplete dominance The situation in which the phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous of either allele.
Created by: liuluohao
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