What aspect of the parent breeds leads to high physical trait variability in the F1 Doxiepoo offspring?

Answer

The parent breeds have very different body structures and coat types.

Because the parent breeds—the long-bodied Dachshund and the curly-coated Poodle—have disparate physical characteristics, the resulting puppies exhibit a wide spectrum of traits.

What aspect of the parent breeds leads to high physical trait variability in the F1 Doxiepoo offspring?
Doghybridbreed