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Name Date Class Lab C Investigating Dominance in Human Traits Directions: Use the information and data from the Lab Gummy Bear Genetics to perform this lab. You have performed an activity that simulates cross-breeding experiments using gummy bears. There are many other possible questions about genetics that you could investigate. Design an observational study to investigate a human trait that shows simple Mendelian dominance. Study the trait in the members of your family and then design a pedigree to trace the trait. One example of a suitable trait is earlobe attachment. The gene for unattached earlobes is dominant whereas the gene for attached earlobes is recessive. You may also choose a different trait as long as it shows simple Mendelian dominance. Please note that you must complete Lab B before beginning Lab C. Also, have your teacher approve your design and safety precautions before beginning your experiment. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 68 Genetics