In their journal article, the researchers said that the new evidence "permits us to speculate that a case of TB was exacerbated by the reduced level of ultraviolet radiation encountered during the expansion of a low-latitude population of dark-skinned Homo into temperate Turkey".
McGlothlin et al. [7] demonstrated positive correlations between the magnitude of testosterone concentration and the size of plumage ornament, which is an important determinant for female choice and male-male competition, in a population of dark-eyed juncos (Junco hyemalis).
In contrast, a migratory population of dark-eyed juncos, Junco hyemalis thurberi, breeding in the mountains of Southern California and wintering along nearby coastal regions, recently established a non-migratory breeding population in urban wintering habitat (Newman et al., 2006).
The author examines how the most famous example of natural selection in action -- the population explosion of dark moths in England's grimy industrial areas -- became the most infamous.
For example, Yeh and Price 88 studied two populations of dark-eyed Junco birds, a native population in the mountains and a newly established population on the University of California San Diego (UCSD) campus.
Recent studies have shown that a number of deactivation pathways can occur in anthraquinones, including emission from tautomeric states following excited state internal electron transfer and from population of a dark, non-radiative state that irreversibly leads to a colorless molecule [34, 35].
The slight difference between brightness values determined at low and high light intensities may be attributed to the increased population of unidentified dark states at higher intensities.
In addition, molecular behavior like reversible binding at sites within the detection volume, the population of photophysical dark states due to triplet or blinking phenomena and photobleaching simultaneously affect the measured shape of the correlation curves and must therefore be theoretically treated.
File 4: A population of a dark-leaved form of S. speciosa with bi-coloured flowers growing adjacent to a stream near the Hotel Fazenda Pedra Lisa, RJ, Brazil.
