21.   The discoverers said the specimen should settle once and for all two issues in evolutionary history.

22.   The high retention of adverse mutations probably reflects the fact that human populations have been extremely small throughout their evolutionary history.

23.   The microbial world contains a detailed record of human evolutionary history, he said.

24.   The Monolith, of course, is the rectangular structure that appears at crucial moments in evolutionary history, granting the gift of intelligence to living creatures.

25.   The rest is evolutionary history.

26.   They are different in origin, different in makeup, they may be different in evolutionary history.

27.   This method of mapping evolutionary patterns, called cladistics, has considerably changed the way scientists interpret evolutionary history.

28.   Why does it matter, knowing the degree of sexual dimorphism in human evolutionary history?

29.   Yet only now are biologists discovering the nuances of the relationship and the evolutionary history behind it.

30.   Experts say the discovery fills a major gap in human evolutionary history.