Which religion has the oldest DNA?

The question "Which religion has the oldest DNA?" is fundamentally flawed because religions do not have DNA. DNA is a biological molecule that carries genetic information and is found in living organisms, not in religions. Therefore, it's impossible for any religion to have "oldest DNA."

The question likely intends to ask about the oldest religion, not about DNA, which is a scientific concept irrelevant to religion in this context. Based on the provided reference, the following clarification and answer is made:

Which religion is the oldest?

The reference states that Hinduism is the oldest religion based on its oldest scriptures, the Vedas, which were compiled between the 15th and 5th centuries BCE.

Here's a summary:

Religion	Approximate Founding Date	Key Reference
Hinduism	15th – 5th century BCE	Vedas compiled within this time frame

Therefore, according to the provided reference, Hinduism is the oldest religion in existence.