BIO 182Bang, Michael2013 SpringWeek 5Lecture 11February 11Recombinant frequencies-used to make genetic maps showing arrangement of genes along a chromosome- Distance between genes=map unit= recombinant frequency of 0.10- Map unit also called a centimorgan (cM)*Know Calculating genetic distance*Deviations from Mendel’s standard crosses- Gene interactions- Incomplete dominance- Pleiotropism- Epistasis- Heterosis- Incomplete penetrance and expressivity- Quantitative trait loci- EpigeneticsPolygenic Inheritance- additive effect of 2+ genes on a single character---also referred to as quantitative or multifactorial inheritancePleiotropic- Single allele can have multiple phenotypicEpistasis- Phenotypic expression of one gene is influenced by another geneHeteriosis- a cross between two different true-breedingPenetrance-Proportion of individuals in a population with a certain genotype that show the phenotypeExpressivity- Degree to which genotype is expressed in an individualThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Number of individuals of a certain genotype = Frequency of that genotype Total number of individualsNumber of the same allele for a gene= Frequency of that alleleTotal number of allele’s for that geneEx.F 12/20 0.6f 8/20 0.4Toal 1.0The answer will total to
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