A single cell divides by splitting into two others, each of which resembles the parent cell, except that they are of less bulk.
Nor can the parent cell be called mother or father: and for that matter, the parent cell cannot be determined.
The parent cell divides into two; these two into two others, and so on.
They eventually become detached from the parent cell, around which they are concentrically arranged.
A portion of the nucleus of the parent cell makes its way through the extremely narrow neck into the daughter cell.
A spore is a minute mass of protoplasm surrounded by a dense, tough membrane, developed in the interior of the parent cell.
In sociology, as in biology, there is no cell without a parent cell.
That a parent cell was requisite for the production of new cells seemed to many investigators to be no longer needed.