Mendelian inheritance describes the fundamental principles governing the transmission of traits from parent to offspring, suggesting that characteristics are controlled by discrete, particulate units of heredity. These units, or alleles, follow predictable patterns during reproduction, adhering to principles such as the Law of Segregation, which states that two alleles for a given trait separate during gamete formation, and the Law of Independent Assortment, which posits that the inheritance of one trait does not influence the inheritance of another. The concepts of dominance and recessiveness explain how varying forms of these traits interact, dictating the phenotype observed in the progeny.