Sentence examples for generations of evolution that from inspiring English sources
(The segment is the same for members of the same species, but it mutates quickly enough, over generations of evolution, that even closely related species have distinct bar codes).
Indeed, Bouma and Lenski (1988) showed that a host: plasmid association underwent significant adaptation during 500 generations of evolution and that this adaptation was the result of evolution of the host chromosome, not the plasmid.
The fitness of all populations increased relative to their common ancestor following 2,000 generations of evolution, indicating that all populations adapted to their selective environments.
These sets form the starting generation of differential evolution that selects new parameter values that perform better in terms of their success rate in capturing phenotypes.
A more recent study investigated accumulated mutations in Escherichia coli (E. coli) genes over 40,000 generations of evolution, and found mutations that may disrupt mRNA secondary structure are selectively filtered out in the course of evolution [ 28].
Travisano and Lenski [ 22, 23] demonstrated that 2,000 generations of evolution was sufficient for these populations to lose fitness when grown on alternative sugars, and the reductions in maximum growth rate at extreme temperatures suggest a trend towards specialization in thermal niche [ 28].
Fig. 4 Over many generations of evolution, endosymbiotic relationships may become so close that the two lineages effectively merge.
The hydrogen and helium in the Sun were produced by Big Bang nucleosynthesis, and the metals were produced by stellar nucleosynthesis in generations of stars that completed their stellar evolution and returned their material to the interstellar medium before the formation of the Sun.
We propose a model for miRNA evolution that suggests a mechanism for de novo generation of new miRNA genes with unique target specificities.
