To clarify: I’m hypothesizing, I do not know for certain this is how it happened. As for how: There’s two ways that could’ve happened, #1 it developed in an ancestral population to all living groups and they took the trait with them, or #2 the fact Humans are so bad at dealing with exposure imposed this trait on all of us Convergent Evolution style.
To clarify: I’m hypothesizing, I do not know for certain this is how it happened. As for how: There’s two ways that could’ve happened, #1 it developed in an ancestral population to all living groups and they took the trait with them, or #2 the fact Humans are so bad at dealing with exposure imposed this trait on all of us Convergent Evolution style.