No one knows how apoptosis came to be, although there are theories. Even the simplest of animals are programmed for it.
Picture a hidden city, that though it cannot be seen, is everywhere. Sound crazy? It’s real.
He gathered around him people with fresh takes, risk takers, even renegades, scientists who believed that evolution was an incomplete explanation for the patterns of life.
For the last forty years, population geneticists have repeatedly said that our population was never smaller than several thousand.
Could humanity have had its origin in a first pair, or did it have to come from a population of at least several thousand?