Phenotype and Genotype of Dragons.

Virtual Lab 3: Genetics I A Phenotype and Genotype of Dragons. You do not have to be able to access the Dragon website to answer these questions. Please type your solutions in bold faced font. 1. Define genotype and phenotype. 2. What is an allele? B. Drosophila Lab. Enter the lab as a guest. You need to purchase a breeding pair of flies. Purchase a female mutant that has a small (vestigial) wing size and a male wild type fly. Wild types are genetically normal and are denoted with a +. Breed them and notice the resulting distribution of phenotypes. 1.Describe and explain the characteristic of the first generation (F1) of flies. Is the vestigial wing characteristic dominant or recessive? 2. Assume that the vestigial winged female’s genotype is vv and the wild type male’s genotype to be ++ and fill in the following Punnet square. 3. What percentage of the F1 generation would show the recessive characteristic phenotypically according to your table? Are your experimental breeding results consistent with what you expect from this assumption and the logic of the Punnet square? 4. Breed two of these F1 flies. To do this select a male and a female from the results of your first cross and put them in the breeding jar. Describe and explain the characteristics of the second generation (F2) flies. 5. Use a Punnet square to predict the ratios of a cross between two +v individuals. Is this consistent with your experimental observations? C. Genetic Disorders Library. Describe the three main classes of genetic disorders and give an example of each.