monohybrid

Lab report

Students perform genetic crosses with living organisms to analyze F1 and F2 generations. The use of monohybrid, dihybrid, and sex-linked crosses gives students a variety of experiences in interpreting data.

The purpose of this lab is to use genetic crosses to illustrate independent assortment and sex-linkage in the fruit fly, Drosophila melanogaster. You will be given monohybrid, dihybrid, and/or sex-linked crosses with well-defined mutant traits. Over the course of four weeks, you will observe and record what happens to the mutant traits as they are passed from one generation to the next. Additionally, you will learn the life cycle of the fruit fly and learn how to recognize the sex of fruit flies, and several types of classic mutations. Lastly, you will compare the predicted results with the actual results using a chi-square analysis

This will ensure that only the desired males will contribute to the offspring in the cross. A female can store enough sperm fr...