As a Pokémon expert, I can tell you that Porygon is a unique digital Pokémon species that was created by humans using the power of science. In the Pokémon world, it is classified as a Normal-type Pokémon. Now, regarding the breeding aspect, Pokémon games have mechanics that allow certain Pokémon to breed and produce eggs, which hatch into new Pokémon.

However, Porygon, along with a few other Pokémon, is part of a group that cannot breed through the standard in-game mechanics. This group is often referred to as the "Undiscovered Egg Group" or sometimes simply as "Ungrouped." The reason for this is that these Pokémon do not fall into any of the existing egg groups, which are categories based on common traits or types.

In the case of Porygon, it is the only Pokémon in the Undiscovered Egg Group until the introduction of Porygon2 and Porygon-Z in later generations, which also cannot breed. This means that Porygon cannot breed with any other Pokémon, including other Porygon, to produce eggs.

read more >>

Yes, like all genderless Pokemon besides legendaries, Porygon, Porygon2, and PorygonZ can be bred with a Ditto, because the evolution is in the mineral group, therefore can breed.read more >>