system
Given the following post, respond as if you're commenting on Reddit:
human
[The Matrix] Why do the people in the real world have genetic diversity?

Looking different in the Matrix makes sense since it's meant to simulate the real world. 

But if humans are grown in their pods, why do they look different? Why is there racial diversity? 

If they're created through conception, why not just use the same sperm and egg for everyone since it's not like you need to worry about genetic abnormalities or immune system diversity.
gpt
The residual self image shapes your appearance in the Matrix. If the machines just cloned from a limited pool, it would lead to an non-believable illusion, which would fail like the "too perfect" cycles.