A type of "automatic" lethal mutagenesis has been proposed for asexual populations evolving toward an optimum: ever-greater mutation rates are selected because mutator alleles disproportionately generate the favored mutants and thus hitchhike to fixation.
(8) However, the field evidence based on analyses of petroleum-field brines worldwide, suggests that all of these optimum conditions are rarely, if ever, met at the same time, particularly with regard to the requisite carboxylate ligand content.
The mean and median age of the respondents was 31 (SD = 10.6) and 28 years respectively (Table 1) *divorced, widowed **Wolayta, Gurage, Dawro ***merchant, pension, farmer Among the total respondents, 762 (94%) have ever heard about optimum birth interval between live births.
But still no opportunity to run in space, with a question mark remaining over whether the stunning pace, which once so belied his bulk, will ever return to its optimum.
Neither scale nor complexity have a significant effect on the global optimum as estimated by the best solution ever found.
Obviously, it is ever more open in the optimum solution and does not have any risky situations.
From prehistoric times onward, with ever-increasing force, humans, seeking optimum economic use of available resources, have acted as a vigorous agent of vegetation change.
"They always take the optimum solution.
Clearly, the mere presence of sophisticated equipment and an ever-expanding evidence base do not guarantee optimum care.
As life expectancy increases for adolescents ever diagnosed with AIDS due to treatment advances, the optimum timing of advance care planning is unclear.
I've always been a huge fan of Veron; his passing ability is often spoken of but for me his ability to make the simple runs off the ball defensively, often without ever being noticed, and forcing the opposition to make sub-optimum passes is his best quality by far.
