BIOL 1107 1nd Edition Lecture 29 Outline of Last Lecture I Dihybrid Cross II Mendel s Rules III Incomplete Dominance IV Codominance Outline of Current Lecture I Epistasis II Polygenic Traits Current Lecture I Epistasis Epistasis where two genes actually interact to perform co colors Black B Brown b black and brown crossed mostly black pups E deposit color just fine either brown or black e 2 e s can no longer deposit color BE BBEE BbEE BBEe BbEe BE bE Be be bE BbEE bbEE BbEe bbEe Be BBEe BbEe BBee Bbee be BbEe bbEe Bbee bbee 9 3 3 1 9 black color 3 black no color 3 brown color 1 no color Q In maize corn plants a dominant complete question on elc New A 3 16 X 1600 300 kernels will be purple heterozygous o Work dominant inhibits kernel color o Recessive permits color These 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 o o o o o II 9 3 3 1 9 no color purple 3 no color red 3 color purple 1 red color Polygenic Traits Polygenic traits traits governed by more than one gene Environmental factors o Some genes can be influences by the environment o Ex Siamese kittens when born pure white enzyme not working Color starts coming as they grow enzyme starts working Genetics Problems Worksheet work these problems similar problems will be on the exam
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