Gene Hunter was not an anime. " Gene Hunter " was a science fiction novel by author Liu Cixin. It told the story of a team of humans who used genetic technology to carry out genetic modification and encountered a series of dangers and challenges in the process of pursuing the truth. Although genetic technology was described as a potential weapon in the novel, the entire novel did not involve visual art forms such as animation, so Gene Hunter was not an animation.
The anime of Hunter x Hunter has fallen behind the manga. There are many plot points and character developments in the manga that haven't made it into the anime. This could be due to various production and scheduling reasons.
Definitely. The manga of Hunter x Hunter continues the story further than what was shown in the anime. It offers more depth and additional plot points that anime viewers might miss out on.
The Hunter x Hunter anime ends approximately around a specific chapter in the manga. But it's a bit tricky to pinpoint exactly as it depends on the version and adaptations.