Darkin-Rodenburg Theory

The Darkin-Rodenburg Theory was put forth by Doctor Emanuel Darkin and Doctor Sally Le Rodenburg. Simply, the theory suggests that life within the Milky Way Galaxy was seeded by an extra-galactic species or civilisation. It is widely accepted within the greater scientific community and has garnered extreme interest in proving the theory.

Based upon the evidence presented within the Milky Way, life is far more uniform and related than previously thought. With the vast majority of species found across the galaxy being closely related and primarily carbon based. Thus suggesting the idea of planned galactic seeding.

Evidence
The greatest piece of evidence that the theory riles upon is the vast majority of life throughout the Milky Way and seemingly the Andromeda Galaxy are carbon based and share a basic genetic origin. This is often simplified to the comparisons between Earth life and the life found on Veretrox. With the Derobear, Beowulf and Verahorn all being seemingly identical in most respects to extinct Earth species.

The evolution of these species across the galaxy also show almost identical patterns, with species evolving seemingly through a planned route or guide. With some worlds being dominated primarily by creatures similar to Earth Dinosaurs, while others are dominated by Mammals.

There is evidence to suggest that even the species of the Andromeda galaxy show non-coincidental similarities to life found within the Milky Way. Supporting the idea that an extra-galactic civilization seeded both galaxies. As the likely hood of life evolving almost identically across one galaxy, let alone two, is statistically unlikely.

Development
Darkin and Rodenburg proposed several ideas within their theory, regarding more than just intentional panspermia. They also suggest that the basic building blocks for life within the Milky Way and Andromeda were designed based of life from another galaxy, likely the galaxy the seeder civilisation originated from. Rather than simply seeding the building blocks of one type of life, instead, they designed the way in which said life would evolve, with certain traits and species being earmarked for repetition, such as the Beowulf and Derobear, which have "cousins" across the galaxy like those of Earth.

Likely the general idea for certain species was planned, however certain variables remain free to be decided by the environment in which the species has evolved. Hence the Mega-fauna classification found widely across Veretrox and not other worlds.

Further Theories
Since the Darkin-Rodenburg theory was presented, several other theories about why the galaxy may have been seeded have been put forth.

Variable Experimentation
Easily the most accepted theory as to why the Milky Way has been seeded, the Variable Experimentation theory suggests that whatever civilisation seeded the galaxy, did so with the intent of learning about how a planet can influence the development and eveolution of life. Likely what the results are when allowing the universe itself to dictate certain conditions.

Colonization
Since the Human-God War began, it has been suggested that the Gods themselves seeded the Milky Way with the intent of one day moving into the Milky Way galaxy when it had developed a variety of designed life throughout. This is supported by the fact that life within the Andromeda galaxy appears to be closely related to life in the Milky Way. However, the destruction of numerous worlds by the Gods suggests that the Colonization theory holds little ground in reality.