Search for dissertations about: "Natural selection"
Showing result 21 - 25 of 1210 swedish dissertations containing the words Natural selection.
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21. Aposematism, Crypsis and Population Differentiation in the Strawberry Poison Frog
Abstract : Evolutionary transitions between the two major predator avoidance strategies aposematism and crypsis are expected to be associated with changes in many important traits of animals. However, empirical studies on populations experiencing ongoing or recent transitions between these strategies are rare. READ MORE
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22. Contributions to subset selection theory
Abstract : .... READ MORE
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23. Costs, benefits and constraints in the evolution of avian reproductive tactics: a study on the blue tit
Abstract : In this study I have investigated the various factors influencing reproductive tactics among breeding blue tits (Parus caeruleus). The study was carried out in a nestbox-breeding population of marked individuals at the Revinge Area, outside Lund, southern Sweden. READ MORE
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24. Biological and Pharmacological Factor that Influence the Selection of Antibiotic Resistance
Abstract : Antibiotic treatment causes an ecological disturbance on the human microflora. Four commensal bacteria: E. coli, enterococci, a-streptococci and coagulase-negative staphylococci, from patients with extensive, high antibiotic usage were investigated with regard to resistance pattern and mutation frequency. READ MORE
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25. The Interplay Between Selection And Constraints On Adaptive Divergence And Phenotypic Evolution
Abstract : Under natural or sexual selection, individuals with advantageous traits or combinations of traits will be more successful than their peers at surviving and/or reproducing. Provided these traits are heritable, meaning that they have a genetic basis, the traits combinations which are selected for, will increase in frequency in the population. READ MORE