This one-page reference sheet covers the foundational concepts of genetics, including DNA structure, genes, alleles, dominant and recessive traits, and basic heredity patterns. It introduces Punnett squares and explains how genetic information is passed from parents to offspring. Key vocabulary such as genotype, phenotype, homozygous, and heterozygous is defined in clear, concise terms. The sheet serves as a reliable in-class or at-home reference for students studying cell biology and inheritanc