Mendel's experiments were conducted with careful control of variables, such as using purebred pea plants and keeping detailed records of traits passed down through generations. He also performed large numbers of crosses to ensure his results were statistically significant. Additionally, Mendel's results were consistent and followed predictable patterns, such as the 3:1 ratio of dominant to recessive traits in the offspring. This allowed him to have confidence in his results and the validity of his conclusions regarding genetic inheritance.
