نتایج جستجو برای: genetic erosion
تعداد نتایج: 644003 فیلتر نتایج به سال:
We describe the sequences of six primer pairs for the PCR amplification of nuclear microsatellite markers in the tree shrews, Tupaia glis and T. belangeri. Multilocus genotyping based on non-destructive DNA sampling of live-trapped animals reveals high allelic variability (A) and heterozygosity (He) at these loci. Such characteristics make these genetic markers ideal for linkage mapping and com...
BACKGROUND Survival bias is the phenomenon by which individuals are excluded from analysis of a trait because of mortality related to the expression of that trait. In genetic association studies, variants increasing risk for disease onset as well as risk of disease-related mortality (lethality) could be difficult to detect in genetic association case-control designs, possibly leading to underes...
Food security covers aspects at all spatial levels from local to global and from an interdisciplinary and systemic food systems perspective. This book aims to better understand environmental, nutritional, agricultural, demographic, socioeconomic, political, technological, and institutional drivers, costs, and outcomes of current and future food security. Interactions with contextual factors inc...
Habitat fragmentation is a ubiquitous by-product of human activities that can alter the genetic structure of natural populations, with potentially deleterious effects on population persistence and evolutionary potential. When habitat fragmentation results in the subdivision of a population, random genetic drift then leads to the erosion of genetic diversity from within the resulting subpopulati...
There is the tendency to assume that endangered species have been both genetically and demographically healthier in the past, so that any genetic erosion observed today was caused by their recent decline. The Iberian lynx (Lynx pardinus) suffered a dramatic and continuous decline during the 20th century, and now shows extremely low genome- and species-wide genetic diversity among other signs of...
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