EBIO 1210 Lecture : Lecture 31 Dominant Recessive Traits

• School: CU-Boulder
• Department: Ecology & Evolutionary Biology
• Course: EBIO 1210
• Professor: Derek Sweeney

Document Summary

Pp applying mendel"shypothesis we construct a punnett square. Therelationshippetweenanompe and phenotype is i studied manyheritablecharacters are not determined by onlyone gene with two alleles. Degrees of dominance complete dominance onus when phenotypes of the heterozygote and dominantheterozygote are identical incomplete dominance the phenotype of f hybrids is somewhere betweenthe phenotypes of thetwoparentsvarieties codominance two dominantalleles affect the phenotype in separate distinguishableways incomplete dominance. Therallelewmpletely dominates resultingin a blended phenotype x pp rr. Rr heterozygote presents its own phenotype what phenotype would you expect in the offspring of this cross assuming mendelian inheritancepatterns x. 1 21 multiallelicgenes a genehas morethantwo alleles mostgenesare like this ie warminance. Bloodtype antigens none anti a anti b antibodies anti b anti a none potential parental was. Epistasis a gene at the loans alters the phenotypic expression of a gene at a second lout paygenerictraits multiple genes contributing to onetrait mostgenes arepolygeneticwhichcanlooklike blending inheritance skincolor is a classicexample.