Is shigella sonnei (pathogenic bacteria) related to the conditions of natural selection?

answer; polycythemia is the correct answer;

what's the question?

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?