Sentences with phrase «evolutionary stasis»

«When we expect to see evolution, but no evolution occurs, this is called evolutionary stasis,» he said, adding that the researchers continue to seek an explanation.

The similarity of the cinnamon fern to the fossil supports the idea that is a «living fossil» — an example of evolutionary stasis, when organisms appear not to evolve for millions of years.

Having unlocked the mysteries of past and present human behavior with the keys left us by George, we can only speculate as to what forms a radical leap to escape our impending evolutionary stasis might take.

Not exact matches

Evolutionary progress, no matter how the concept of progress may be defined (and no generally accepted definition has yet appeared), has undoubtedly occurred in some lines, but in other lines there has been stasis or even partial regression.

There is a general pattern in the fossil record of sudden appearance of new forms followed by «stasis» (i.e., absence of basic evolutionary change).

In principle, three types of evolutionary response are possible: stasis, extinction, or evolutionary change.

They proposed that species experience long stretches of general stasis, interrupted by the abrupt emergence of new evolutionary forms over relatively few generations.