Mutations have negative connotation. can an organisim recieve benefit from having undergone a mutation?

Yes.

Explanation:

Even though most of the time mutations are not useful or harmful for the organisms. Mutations are also the driving force evolution and speciation process ( creation of new species). If the mutation benefits the individual in some way, this trait can pass onto the next generation by natural selection. scientist have evidence of mutations that created a new species in just one generation, read the link below.

https://www.nytimes.com/2018/02/05/science/mutant-crayfish-clones-europe.html

nucleus

would be most reasonable answer tbh

its probably to later but whats the question