Different types of maize (Zea mays) are available such as popcorn, sweet corn, waxy corn, pod corn, etc. This is an example of

The diversity of genetic characteristics within a species is termed genetic diversity. Genetic diversity can exist between individuals and populations of the same species. Species diversity is the diversity of species within an ecosystem. Ecosystem diversity is the diversity of ecosystems of a region.

As popcorn, sweet corn, waxy corn, pod corn, etc., are different varieties of the same species (Zea mays), this is an example of genetic diversity.