This is a basic practice to help students master genetics vocabulary. It includes definitions and diagrams of the following vocabulary: Cell:, DNA, Chromosome, Gene, Trait, Genotype, Phenotype, Allele, Homozygous, Heterozygous, Dominant Trait, Recessive Trait. The practice is straightforward and comprehensive. Students are provided diagrams and definitions. First, they create their own definitions for the words. Second, they answer high order thinking questions about the words - comparing and contrasting, applying, evaluating, analyzing and synthesizing.