A recognisable likeness of a celebrity will be artless, unless it acquires its own position in relation to all the other images of that celebrity and celebrity itself.
Early models for the evolution of duplicated genes [23] suggested that one copy will be subject to mutational decay, unless it acquires a new beneficial function [24], while the other one retains its original function.
A pseudogene should be free from any functional pressure and, therefore, should not be conserved over long evolutionary periods, unless it acquires a functional role.
If the duplicated pair does not undergo subfunctionalization, the additional copy may be lost due to the accumulation of natural mutations unless it acquires new functions through positive selection [ 31].
At the same time, Lawrence's recent invention, the cyclotron, promised to revolutionise experimental nuclear physics, and Chadwick felt that the Cavendish laboratory would fall behind unless it also acquired one.
These values are similar, suggesting that acquisition of the plasmid by P. ananatis AJ13355 was not a recent event, unless it was acquired by horizontal transfer from an organism with a similar G + C content.
Whatever one thinks of the president's ambitious but expensive vision, it is doomed to fail unless it first acquires broad public support and scientific backing through extensive discussion.
During his career, Nemeth also remained current with technology, first developing a Braille slide rule and then realizing that his "training and skills would soon become obsolete unless I acquired knowledge and skill in computer science".
Unless of course, you're GSO Capital: It was acquired by the Blackstone Group in January for $930 million.
