What do you mean by responsible? Do you want to know the genetics behind it, what the surface markers do, or why they are metically important? I think I can help.
She should conduct an expirement that proves whether the water changes the white flower or not
The answer is actually
<em>increased variation in tail feather color because the selection pressure has been relieved</em>
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<em>Good luck!</em>
<em>-RxL</em>
Organelles must do their duties together and their activities must be coordinated I'm pretty sure.