Final answer:
Grafting is the plant propagation process that ensures genetic diversity by combining the traits of two plants.
Step-by-step explanation:
Grafting is the plant propagation process that ensures some genetic diversity. Grafting involves taking a branch or bud from one plant, called the scion, and attaching it to a different plant, called the rootstock. This creates a novel organism, known as a chimera, that combines the favorable traits of both plants. Grafting is commonly used in practices such as wine grape propagation to produce plants with desired characteristics.