Please improve the consistency in the given paragraph
Extensive research on platypuses shows that their toxin was initially formed from gene duplication. Data provides evidence that the further evolution of platypus venom does not rely as much on gene duplication as once was thought.
Extensive research on platypuses shows that their toxin was initially formed from gene duplication, but data provides evidence that the further evolution of platypus venom does not rely as much on gene duplication as once was thought.