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  • Chorion  (1)
  • Genetic Phenomena  (1)
  • 1
    Call number: QH431:146
    Keywords: Genetic Phenomena
    Description / Table of Contents: Introduction to genetics -- Mitosis and meiosis -- Mendelian genetics -- Modification of mendelian ratios -- Sex determination and sex chromosomes -- Chromosome mutations : variation in number and arrangement -- Linkage and chromosome mapping in eukaryotes -- Genetic analysis and mapping in bacteria and bacteriophages -- DNA structure and analysis -- DNA replication -- Chromosome structure and DNA sequence organization -- The genetic code and transcription -- Translation and proteins -- Gene mutation, DNA repair, and transposition -- Regulation of gene expression in bacteria -- Regulation of gene expression in eukariotes -- Recombinant DNA technology -- Genomics, bioinformatics, and proteomics -- The genetics of cancer -- Quantitative genetics and multifactorial traits -- Population and evolutionary genetics
    Edition: Tenth edition.
    ISBN: 9780134898414
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    QH431:146 available
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  • 2
    ISSN: 1432-0878
    Keywords: Vitelline membrane ; Chorion ; Ephestia ; Follicle cell ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Ultrastructural studies on developing egg chambers of the moth, Ephesita kühniella reveal that the precursors of the vitelline membrane are synthesized within follicle cells which are in contact with the oocyte. The vitelline membrane precursors appear to be synthesized by the rough-surfaced endoplasmic reticulum, and this material apparently moves to the Golgi cisternae where the definitive vitelline membrane precursor body is produced. The previtelline bodies are then secreted into the spaces between the oocyte and follicle cells, where they fuse to form a continuous membrane. Chorion formation begins with the deposition of a layer of tubules at the outer edge of the vitelline membrane which coalesce to form the inner edge of a thin, striated layer. In subsequent stages, several compartmented layers are rapidly secreted external to the striated layer, giving rise to the mature chorion.
    Type of Medium: Electronic Resource
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