Answer:
<em>Extracellular</em><em> </em><em>glucose</em><em> </em><em>affects</em><em> </em><em>the</em><em> </em><em>lactose</em><em> </em><em>operon</em><em> </em><em>activation</em><em> </em><em>by</em><em> </em><em>inhibiting</em><em> </em>
As evidenced by their most recent common ancestor, the wings of the butterfly and the wings of the bat evolved independently, long after their ancestral lineages diverged. More examples of analogous structures: wings of various species (though the bones supporting the wing may be homologous, in some cases)
Is it a multiple choice answer?
The answer would be <span>oxygen.</span>
