Does "of the population" mean "of the population (of the cells of the human body)"?

Context:

Most of those mutations occur in parts of the genome that are not essential, and therefore they have little or no conse-
quence. The ones that fall in the more vulnerable parts of the genome are generally harmful, and are thus rapidly culled out
of the population because they reduce reproductive fitness. But on rare occasions, a mutation will arise by chance that offers a slight degree of selective advantage. That new DNA "spelling" will have a slightly higher likelihood of being passed on to future offspring. Over the course of a very long period of time, such favorable rare events can become widespread in all members of the species, ultimately resulting in major changes in biological function.