Search for dissertations about: "sperm biology"
Showing result 1 - 5 of 36 swedish dissertations containing the words sperm biology.
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1. Selection in sperm and its consequences : Exploring haploid selection, ageing and epigenetic effects in sperm
Abstract : 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. READ MORE
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2. Sex, Sperm and Speciation : On sexual selection and fertility in hybridizing flycatchers
Abstract : Sexual reproduction entails complex co-evolution between the sexes, necessary for successful fertilization, ensuring individual and population-level fitness. Interfertility is the main criterion for species definition and understanding speciation requires detailed studies of reproductive barriers. READ MORE
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3. Sperm Membrane Channels, Receptors and Kinematics : Using boar spermatozoa for drug toxicity screening
Abstract : Internal fertilization usually implies that a spermatozoon, with intact attributes for zygote formation, passes all hurdles during its transport through the female genitalia and reaches the oocyte. During this journey, millions to billions of other spermatozoa perish. READ MORE
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4. Stochastic modelling and analysis of early mouse development
Abstract : The aim of this thesis is to model and describe dynamical events for biological cells using statistical and mathematical tools. The thesis includes five papers that all relate to stochastic modelling of cells. READ MORE
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5. Choice, competition, and interactions between episodes of sexual selection
Abstract : Choice and competition are essential parts of evolutionary biology. In an effort to pass their genes from one generation to the next, animals may carefully choose their mating partners, and/or compete for access to mates. READ MORE