This is one of a series of laboratory activities built on the 5-E approach. Each activity provides opportunities for students to ENGAGE ←→ EXPLORE ←→ EXPLAIN ←→ ELABORATE ←→ EVALUATE.
This dry lab includes in-depth explanations. It offers a choice of three crosses for analysis: monohybrid, dihybrid, and sex-linked. This version is appropriate for students in any class that includes a unit on genetics through AP/IB Biology level.
Students learn the basic life cycle of the fruit fly, Drosophila melanogaster, and review three types of genetic crosses. They participate in a Fantasy Lab where each step in a hands-on Drosophila lab is described and explained. After practicing Punnett squares for each possible genetic cross, students receive data collected in an actual college genetics class. Ten unique sets of data are provided, so a class can be divided into ten lab groups without duplication of results. The EVALUATE task is to demonstrate an understanding of the process by beginning with a data set and determining the what crosses were made. An optional question on mutation is included.
Answers to all questions and a rubric for the EVALUATE task are included in the Teacher’s Guide.