Search for dissertations about: "meiosis"

Showing result 1 - 5 of 32 swedish dissertations containing the word meiosis.

  1. 1. Chromosome synapsis and recombination in yeast meiosis

    University dissertation from Stockholm : Institutionen för molekylärbiologi och funktionsgenomik

    Author : Hasanuzzaman Bhuiyan; Stockholms universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; meiosis; recombination; synapsis; yeast; NATURAL SCIENCES Biology Cell and molecular biology Molecular biology; NATURVETENSKAP Biologi Cell- och molekylärbiologi Molekylärbiologi;

    Abstract : Meiosis is a cell division process that produces haploid gametes from diploid cells. Several important meiotic events take place during prophase of meiosis I, most important being homologous chromosome pairing, meiotic recombination and formation of the synaptonemal complex (SC). READ MORE

  2. 2. The evolution of the nuclear envelope

    University dissertation from Stockholm : Department of Molecular Biology and Functional Genomics, Stockholm University

    Author : Nadja Neumann; Stockholms universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear pore complex; bouquet; meiosis; nucleus; eukaryote evolution; nucleoporin; tree of life; stem group; recombination; NATURAL SCIENCES Biology Cell and molecular biology Molecular biology; NATURVETENSKAP Biologi Cell- och molekylärbiologi Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : The nucleus is one of the defining features of eukaryotes and the question of its origin is intimately linked to the evolution of the eukaryotic cell. It is delimited by a double lipid bilayer called the nuclear envelope, which separates the nuclear interior from the cytoplasm. READ MORE

  3. 3. The significance of sexuality and cyst formation in the life-cycles of four marine dinoflagellate species

    University dissertation from Lund University

    Author : Rosa Figueroa; Lunds universitet.; Lund University.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cyst; Hydrobiology; akvatisk ekologi; marine biology; aquatic ecology; limnology; sexuality.; meiosis; Lingulodinium polyedrum; life-cyle; limnologi; Marinbiologi; Gymnodinium nolleri; Gymnodinium catenatum; Alexandrium catenella; dinoflagellates;

    Abstract : Sexuality and cyst formation were studied in the marine dinoflagellate species Gymnodinium catenatum Graham, Gymnodinium nolleri Ellegaard ? Moestrup, Alexandrium catenella (Whedon et Kofoid) Balech, and Lingulodinium polyedrum (Stein) Dodge. The study included the morphological characterization of sexual stages and processes, the time and description of meiosis, the study of the length and regulation of the mandatory dormancy period of resting cysts, and the relationships among parental strains and cyst progeny at phenotypic and molecular levels. READ MORE

  4. 4. Molecular analysis of protein complexes involved in pairing of mammalian chromosomes during meiosis

    University dissertation from Stockholm : Karolinska Institutet, Department of Cell and Molecular Biology

    Author : Jeanette Pelttari Danielsson; Karolinska Institutet.; Karolinska Institutet.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : How is the accuracy of chromosomal pairing and segregation processes in dividing meiotic cells assured? This is an important question as premature or erratic segregation of chromosomes can give rise to aneuploidy, which is the leading genetic cause of pregnancy loss in humans. Meiosis is a cell division process that produces genetically unique haploid gametes from diploid cells. READ MORE

  5. 5. Molecular architecture of meiotic chromosomes

    University dissertation from Stockholm : Karolinska Institutet, Department of Cell and Molecular Biology

    Author : Ivana Novak; Karolinska Institutet.; Karolinska Institutet.; [2006]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Meiosis; Chromosome architecture; Synaptonemal complex; Cohesin complex;

    Abstract : Faithful chromosome segregation at each cell division is essential as the formation of cells with an abnormal number of chromosomes (aneuploid cells) can result in infertility, developmental defects or cancer. Aneuploidy occurs in approximately 20% of all conceptions, causing infertility and embryo death. READ MORE