Vault 84

Vault 84
Vault 84 was dedicated to animal cloning and genetic modification. A small team was assigned to research and create animals that were capable of resisting the radiation and repopulating the world after the bombs dropped.

Years after the bombs fell, the scientists realized that there was no way of keeping the vault populated with just the handful of people living within, so after heavy discussion, the Dwellers decided to clone themselves in order to finish their research and keep the project alive.

Cloning
Upon each dweller's 35'th birthday, they were ordered to clone their DNA and raise their clone to further the research and eventually replace the former after they died.

After several generations of cloning, it was noted that each new clone was becoming more aggressive and unstable. Upon investigation, it was discovered that the genome was being destroyed after each clone, having no other choice, the dwellers used genetics from the animals to restore their own. Resulting in each new clone having more animalistic features than the last.