Representatives from the nation's 15 largest cities met in Washington to trade ideas, Mr. Saft said, about how to deal with "diverse populations, a multiplicity of languages, large numbers of people coming off public assistance, and other unique problems of large cities".
Correspondingly, subjecting field populations to a multiplicity of treatments might induce the emergence of multiple coexisting resistance alleles.
The diverse origins of U.S. weedy rice populations demonstrate the multiplicity of evolutionary forces that can influence the emergence of weeds from a single species complex.
We concluded that the φ6 populations evolved under low multiplicity showed greater genetic variability than the high MOI populations, on average, based on sequence data representing ~10% of the viral genome.
Other limits of our comparison group (census infants) are that we were unable to exclude very preterm infants and multiples from the census population, as gestational age and multiplicity are not available in the census data; but these represent a small proportion of all live births and would thus have a very minor impact on the birth population deprivation quartiles.
To fine map the genetic loci underlying quantitative traits (QTL) like tumor multiplicity, backcross populations typically are used because if extreme phenotypic differences exist between the parental strains and dominant interactions are expected, they allow the segregation of cancer modifier loci in a shared genomic background (Darvasi 1998).
Unique features of the region where this focus is located include its ancient geological origin, highly structured and varied landscapes, large extensions of rainforest and mountainous areas crisscrossed by rivers where transmission occurs, seminomadic and rainforest-dwelling characteristics of the at-risk Yanomami population inhabiting the area, and multiplicity of Simulium vectors.
Selection through referral chains entails selecting first a number of individuals of the target population (through any of a multiplicity of possible methods), and subsequently selecting additional members of the target population who are identified through references made by the initial (or 'seed') respondents.
Herein, we carried out a genetic linkage study on the transcriptome of lung tumors induced by urethane in an (A/J x C57BL/6 F4 intercross population, whose individual lung tumor multiplicity (Nlung) is linked to the genotype at the Pulmonary adenoma susceptibility 1 (Pas1) locus.
In this population, high educational level and multiplicity of sexual partners seem to determine risk among young women.
