Yes.
It's limited to genetic changes that don't interfere with a species survival. Small steps that can build up and not kill individuals inheriting them.
The whole point I keep trying to make, is that multiple ways of addressing the same survival, are preserved together, with those that are "used" (to cause the species to survive).
If I survive by climbing a tree, all the various heights of climbing a tree are preserved together, by the one adaptation to climb a tree.
This is typically called a "knock on effect".
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