Sökning: "natural selection"
Visar resultat 1 - 5 av 1235 avhandlingar innehållade orden natural selection.
1. 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
2. Robust inference of gene regulatory networks : System properties, variable selection, subnetworks, and design of experiments
Sammanfattning : In this thesis, inference of biological networks from in vivo data generated by perturbation experiments is considered, i.e. deduction of causal interactions that exist among the observed variables. Knowledge of such regulatory influences is essential in biology. LÄS MER
3. Deflating selection : On the interpretation and application of evolutionary theory
Sammanfattning : Although the theory of evolution is well-established it nevertheless presents us with a few unresolved matters of interpretation. One key task is to get clear about what exactly one should take the term 'natural selection' to denote. LÄS MER
4. Pawsitive selection : Genetics of dog-human communication
Sammanfattning : Through domestication and recent selection, dogs have evolved a unique set of communicative skills to attract and redirect human attention. These social skills have not been seen to the same extent in socialised wolves and are therefore believed to have a significant genetic basis. LÄS MER
5. Tracing selection and adaptation along an environmental gradient in Populus tremula
Sammanfattning : The distribution of the expressed genotype is moved around in the population over time byevolution. Natural selection is one of the forces that act on the phenotype to change the patterns ofnucleotide variation underlying those distributions. LÄS MER
