Welcome to the electronic biology frontier classroom of the 21st century. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding. However, the modern science of genetics, which attempts to understand the process of inheritance, only began with the work of Gregor Mendel in the mid-19th century. This test has unlimited number of attempts to increase your LEARNING and TEST-TAKING SKILLS. I wish you good luck and enjoy learning about genetics and heredity.