01/27/16

Classwork: Virtual Fly Lab Create a New account Use class code: 14655261 Understanding the Program Start by ordering two wild type flies and mate them. View your flies under the microscope and sort them. View the flies close-up and note the difference between males and females. Add your data to your notebook.  Use the computer to "analyze results" Go to the chi square analysis. Enter your hypothesis. Since both of your parents with wild type, you would expect a 50:50 ratio of male to females. You will need to you a calculator to determine the expected numbers from the total number of offspring you have. Enter that number in the "hypothesis" column.  The computer will do the chi square analysis for you and show your statistical results.  Return to your notebook and look at your data.  "Save" your notebook. Just play with the simulator for now to see what it does. Remove all your data from your notebook before you start the real assignments. For you to do: Determine the zygosity of each fly in your cross dominant or recessive, homozygous or heterozygous Determine the effects of each allele by analyzing the offspring from your crosses. Lethal alleles, linked genes (bonus for determining map distance), sex-linkage, etc. Support or refute your hypothesis with a Chi-square analysis of the results The Assignments You will be assigned one of the following crosses below Female apterous wing x Male sepia eyes Female dumpy wing x Male shaven bristles Female purple eyes/apterous wing x Male wild type Female wild type x Male yellow body Female curly wing x Male wild type Female wild type x Male stubble bristles Female wild type x Male scalloped wings Female black body x Male purple eye Female Lobe eyes x Male spineless bristles Female vestigial wings x Male eyeless Female wild type x male white eye Come up with a null hypothesis for your cross.  Your hypothesis should be based on Mendelian ratios. You will write a formal lab report (in partners) using the template provided on the virtual fly lab grading will be based on the virtual fly lab rubric Homework: Keep Reading: Ch 14-16 Reading guides 14655261 Short Exam/ Long Quiz next Monday (02/01)