<span>The wings on
the beetles are examples of vestigiality. Vestigiality is a structure with
attributes that have apparently loss its ancestral function but stil present
during evolution. It is a normal evolutionary process in the changing
environment that does not pressure them to evolve.</span>
Answer: Differences of opinions, ethics, and rivalry possibly
Curly wings= W
straight wings= w
_________________
|W,W | W,w|
----------------
|w,W | w,w|