Who were our earliest ancestors? The answer could lie in a special group of single-celled organisms with a cytoskeleton similar to that of complex organisms, such as animals and plants.

The origins ... earliest life forms on Earth have been discovered, providing insight into the characteristics of these ...

So how could nature create suitable conditions for the origin of life ... advanced reaction mechanisms of life today, nature ...

Gould, “Evolution as Fact and Theory” Discover, May 1981 The second point is that Darwin's theory of evolution is silent on the 'origin of living things' – that is, how life on earth began.