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Showing result 1 - 5 of 17 swedish dissertations matching the above criteria.

2. 1. Evolutionary Resolutions of Conflicts with Mates and Offspring

   Author : Roger Härdling; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Clutch evolution; Arms race; Idothea baltica; Evolutionary conflicts; Sexual conflicts; Parent-offspring; Endosperm; Ecology; Ekologi;

   Abstract : In sexual conflicts and conflicts between parents and offspring, natural selection acts in different directions on the two sides. For example, males may be selected to achieve many mates, but female fitness may be maximised by monogamy. In this thesis I study the evolutionary outcome of these situations mainly by theoretical modelling. READ MORE

4. 2. Catching the Spore killers : Genomic conflict and genome evolution in Neurospora

   Author : Jesper Svedberg; Hanna Johannesson; Mark A. Kirkpatrick; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Genomics; genomic conflict; genome evolution; meiotic drive; spore killer; suppression of recombination; inversions; fungi; Neurospora; Biologi; Biology;

   Abstract : A genome is shaped by many different forces. Recombination can for instance both create and maintain genetic diversity, but the need to locally reduce recombination rates will also leave specific signatures. READ MORE

5. 3. MHC polymorphism in a songbird : Fitness, mate choice, and sexual conflict

   Author : Jacob Roved; MEMEG; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Major histocompatibility complex; MHC diversity; MHC haplotypes; sexually antagonistic selection; costs of immune responses; adaptive immunity; great reed warbler; songbird;

   Abstract : Sex differences in immune responses have been observed across a wide range of animal species, with the generaltendency that males have weaker immune responses than females. These differences are at least partly caused by immune-regulating effects of sex hormones, and have been associated with an increased prevalence of autoimmune disorders in females and with a general tendency for males to be parasitized more often than females. READ MORE

6. 4. Mitochondrial plasmids, genetic conflicts and sex-determination in Silene vulgaris

   Author : Helene Andersson; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Silene vulgaris; sex-determination; mitochondrial plasmids; genetic conflicts; Botanik; Botany;

   Abstract : Plants like all other eukaryotic organisms carry most of their DNA in the nucleus. In addition, plants also have both chloroplasts and mitochondria that contain their own genetic material. The genomes in chloroplasts and mitochondria control certain vital processes, but most often the organelles act under strict nuclear control. READ MORE

7. 5. Evolutionary dynamics of migration and breeding in wild birds: genetic architecture, sexual conflicts and evolutionary constraints

   Author : Maja Tarka; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantitative genetics; heritability; intralocus sexual conflict; antagonistic selection; QTL; G-matrix; wing length; arrival date; migration; geolocator; bird; Acrocephalus arundinaceus;

   Abstract : Our knowledge of the evolutionary potential of traits involved in different selective episodes, especially in natural populations, is still limited. This is true for questions such as the genetic basis and inheritance of traits, how natural and sexual selection acts on them, and how selective conflicts influence the evolutionary response to selection. READ MORE