In the mid century, a named Gregor Mendel tended a in a central monastery. Mendel's in that peaceful garden would one day revolutionize the study of .
Mendel wondered why different had different . Some pea plants grew tall, while others were . Some plants produced green seeds, while others had seeds. Mendel observed that the pea plants' were often similar to those of their . Sometimes, however, the plants had traits from their parents.
Mendel experimented with of pea plants to understand the process of heredity. Today, Mendel's experiments form the foundation of the scientific study of heredity.