Watch 123Movies. The story of Johann Gregor Mendel briefly and entertainingly encompasses his entire life from childhood to the autumn of life: all the pitfalls and peripeties fate has prepared for him, his father's death, monastic service, and above all the basic discovery of the laws of heredity he made while crossing pea lines. When his contribution was misunderstood by his contemporaries, Mendel turned to a number of other natural sciences.