Bouchard's Law is a principle in genetics that states that the characteristics of an organism are influenced by its environment and its genetic makeup. This law emphasizes the interaction between heredity and environmental factors in shaping traits. The law is named after François Bouchard, a French scientist who contributed to the understanding of how traits are passed down through generations. Bouchard's Law highlights that while genes provide a blueprint for development, external conditions can significantly affect how these traits are expressed in an individual.