Module 10 Lab Report

Module 11 Lab Report Classical Genetics Student Name: Part 1: Complete and Incomplete dominance What type of allele dominance is expressed in each of the Punnet Squares shown. Complete dominance, Incomplete dominance, Codominance. Complete dominance Incomplete dominance Codominance Codominance Incomplete dominance Incomplete dominance Part 2: Independent Assortment

What type of punnet square best represents the law of independent assortment? A dihybrid punnet square best represents independent assortment. Assume the following: The webpage linked here ( Human Mendelian Traits ) has a list and examples of 6 different human traits that are believed to be inherited in true Mendelian pattern dominant/recessive. Select 2 of the traits listed that either you, a sibling or your parents have. (If you do not want to do this in your own family, select a friends family, or a pair of celebrities with children that you can look at pictures of). You will be completing a dihybrid Punnet square using the traits you select. We will have to make a few assumptions since we don’t know the true parental genotype, but we may be able to figure that out! Assumptions: § If the parent expresses the trait, they are homozygous dominant § If the child/children express the trait but the parents do not, the parents are heterozygous. Traits selected: height and hair straight or curly Write the Letters you will be using in the Punnet square for each trait: T tall t small and S straight s curly Father Genotype: TTss possible gametes: Ts Mother Genotype:ttSS possible gametes: tS Parent Gametes TS Ts tS ts TS TTSS TTSs TtSS TtSs Ts TTSs TTss TtSs Ttss tS TTtSS TtSs ttSS ttSs ts TtSs Ttss ttSs ttss Do you have the phenotype of either of the traits in the cross? If you do, which one? I do I am short with curly hair. Are there any other offspring with either trait? Yes Which trait? One is tall with straight hair. Which phenotypic probability did you fall into? 6.25% Which phenotypic probability did other offspring fall into? 56.25%