The expected pattern under a scenario of compensatory evolution would be slow evolution in the early phases of the competition experiment with more rapid selection in the later stages.
This result supports the idea that salivary gland genes of unrelated haematophagous arthropods were acquired in a scenario of convergent evolution, and the differences between proteins possibly magnified by fast evolution due to the host immune pressure on the protein products [ 9].
In this paper, we present some of the recent spectroscopic and imaging observations of the circumstellar envelopes of evolved stars and discuss a scenario of chemical evolution including the possible role of photochemistry in the late stages of stellar evolution.
Conceivably, such an advanced stage in the evolution of life forms was reached before the code reached its local fitness peak, in support of a scenario of code evolution that combines selection for translational robustness with Crick's frozen accident.
We wrote a computer program in JAVA APPLET version 1.0 and designed an online interface, The Jackprot Simulationhttp://faculty.rwu.edu/cbai/JackprotSimulation.htm, to model a numerical interaction between mutation rate and natural selection during a scenario of polypeptide evolution.
Up to that point, fossil hominins had been discovered only in Europe and Asia, and one species in particular, Eoanthropus dawsoni from Piltdown in England, suggested a scenario of human evolution that was completely at odds with that implied by the Taung child (Keith 1915; Boule 1921).
However, the probably limited number of colonizing individuals would render a scenario of the evolution of trait divergence subsequent to colonization also plausible.
This pattern is consistent with a scenario of neutral evolution after insertion in the genome (Additional file 2: Figure S1).
Under a scenario of replicated evolution of a trait (here bird-pollination syndrome) it is expected that, in most cases, the trait will have evolved in slightly different ways because the lineages are independent, although they might be closely related.
Despite of the proposed HGTs, the current phylogenetic distribution of the HisIE bifunctional enzyme evokes a scenario of convergent evolution and independent gene fusions/splitting of the two cistrons in different lineages.
