system
Given the following post, respond as if you're commenting on Reddit:
human
How does low gene diversity cause birth defects?
gpt
It doesn't directly (there are highly inbred mouse lines that don't have issues with birth defects). The concern with inbreeding is that offspring may end up with two copies of a recessive deleterious mutation. As long as the "bad" genes aren't there to begin with there is not much of a problem.