53 Boton iSu 255 22.1 One-Trait Crosses 22.2 Two-Trait Crosses . 22.3 X-Linked Crosses State Mendel's law of segregation, and relate this law to laboratory exercises. Describe and predict the results of a one-trait cross in both tobacco seedlings and corn. LABORATORY 22 Patterns of Inheritance Introduction Inquiry into Life Laboratory Manual, 16th Edition State Mendel's law of independent assortment, and relate this law to laboratory exercises. Explain and predict the results of a two-trait cross in corn plants and Drosophila. Learning Outcomes Pre-Lab 1. Capital letters indicate the Explain and predict the results of an X-linked cross in Drosophila. recessive allele, Gg). Genotype refers to an individual's genes, while phenotype refers to an individual's appearance (Fig. 22.1). Homozygous dominant and heterozygous individuals show the dominant phenotype; homozygous recessive individuals show the recessive phenotype. genotype and lower-case letters indicate the Figure 22.1 Genotype versus phenotype. Onl