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    Chromosomes

    The cell nucleus contains the majority of the cell's genetic material in the form of multiple linear DNA molecules … See more

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    Cell nucleus - Wikipedia

    The Cell Nucleus Explained
    The Cell Nucleus Explained
    The cell nucleus is the command center of a eukaryotic cell, the type of cell that makes up animals, plants, fungi, and protists.
    Nuclear structures and landmarks

    The nucleus contains nearly all of the cell's DNA, surrounded by a network of fibrous intermediate filaments called the nuclear matrix, and is enveloped in a double membrane called the nuclear envelope. The nuclear env… See more

    Function

    The nucleus provides a site for genetic transcription that is segregated from the location of translation in the cytoplasm, allowing levels of gene regulation that are not available to prokaryotes. The main function of t… See more

    Dynamics and regulation

    The entry and exit of large molecules from the nucleus is tightly controlled by the nuclear pore complexes. Although small molecules can enter the nucleus without regulation, macromolecules such as RNA and protein… See more

    Nuclei per cell

    Most eukaryotic cell types usually have a single nucleus, but some have no nuclei, while others have several. This can result from normal development, as in the maturation of mammalian red blood cells, or from faulty … See more

    Evolution

    As the major defining characteristic of the eukaryotic cell, the nucleus's evolutionary origin has been the subject of much speculation. Four major hypotheses have been proposed to explain the existence of the nucleus… See more

    History

    The nucleus was the first organelle to be discovered. What is most likely the oldest preserved drawing dates back to the early microscopist Antonie van Leeuwenhoek (1632–1723). He observed a "lumen", the nucleus, in … See more

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