Sökning: "Sexual selection"
Visar resultat 1 - 5 av 144 avhandlingar innehållade orden Sexual selection.
1. Sexual selection and intersexual conflicts in water striders
Sammanfattning : .... LÄS MER
2. Evolutionary consequences of sex-specific selection
Sammanfattning : Sex-specific selection is widespread, evident by the evolution of sexual dimorphism in many traits in sexually reproducing taxa. The reason why the sexes may experience selection that differs in direction or magnitude is often linked to the reproductive strategies associated with the sex-specific reproductive physiology. LÄS MER
3. Sexual Selection and Adaptation to Novel Environments
Sammanfattning : The work included in this thesis aims at exploring the environmental sensitivity of benefits and costs of sexual selection through a combined empirical and theoretical effort, to increase our understanding of the impact of environmental change on sexually reproducing populations.Can sexual selection promote adaptation to novel environments? Sexual selection for good genes should accelerate adaptation by granting higher reproductive success to individuals of high genetic quality. LÄS MER
4. Selection in sperm and its consequences : Exploring haploid selection, ageing and epigenetic effects in sperm
Sammanfattning : Sexually reproducing eukaryotes are typically going through a biphasic life cycle with a diploid and a haploid phase. Unlike in plants where selection on haploid pollen genotypes is well established, the possibility of selection occurring in animal sperm is currently not known. LÄS MER
5. Sexual Conflict and Gene Expression in Drosophila melanogaster
Sammanfattning : Sexual conflict is broadly defined as a conflict between the evolutionary interests of the two sexes. Depending on the genetic architecture of the traits involved, it can occur at the level of male-female interactions or take the form of selection acting to change the mean of a shared trait against the sign of its genetic correlation. LÄS MER