The offspring of two different varieties is called a hybrid.

Here's why:

* Variety: A variety refers to a specific type or strain within a species. For example, there are many varieties of apples (Granny Smith, Honeycrisp, etc.).

* Hybrid: A hybrid is the result of crossbreeding two different varieties, combining their traits.

So, when you crossbreed two different varieties of apples, for instance, the resulting offspring is a hybrid apple.