This document provides instructions for conducting an experiment using Drosophila melanogaster to study sex linkage and inheritance of genes through generations. The experiment involves crossing flies with different visible genetic traits and observing the traits expressed in the offspring (F1 generation). By tracking these traits from parents to offspring, the experiment aims to show that sex-linked and autosomal genes can be inherited from one generation to the next. Precise recording of mating dates and life cycles is important for analyzing the results.