What did Mendel's cross-pollination of pea plants prove?

Responses

Inherited factors combine in offspring to create entirely new characteristics.

Inherited factors combine in offspring to create entirely new characteristics.

Each parent only passes on one-half of its hereditary factors to each offspring.

Each parent only passes on one-half of its hereditary factors to each offspring.

It takes four generations of offspring to identify the parents' factors.

It takes four generations of offspring to identify the parents' factors.

There is no such thing as a true-breeding plant; they all have hidden factors.

Inherited factors combine in offspring to create entirely new characteristics.