system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What does the claim that we, humans, share 99% of our DNA with chimpanzees actually mean?
gpt
What is *meant* by the claim depends a lot on who is saying it. Some people feel this has philosophical or scientific significance that others don’t agree with.

But the claim, on the surface, is true, or close to true.

A vast majority of genes are used to carry out basic cellular functions like generating power (converting glucose and oxygen to ATP), cell division to create new cells... even “specializations” like the creation of muscle fibers or electrochemical signaling proteins in nerve cells may be similar between all mammals, or even all vertebrates.

The remaining 1% can account for a huge amount of variation, though. This doesn’t mean humans aren’t “meaningfully” or significantly different from chimpanzees. All the similarity just means we share the basic biochemical structure of our bodies, and even methods of reproduction, etc.