Quick Answer. Instinct, or innate behavior, is an action that is impulsive or immediate based on a particular trigger or circumstance. Learned behavior is an action that someone learns or develops over time through observation, education, training or experience.
The nuclear lamina is a dense (~30 to 100 nm thick) fibrillar network inside the nucleus of most cells. It is composed of intermediate filaments and membrane associated proteins. Besides providing mechanical support, the nuclear lamina regulates important cellular events such as DNA replication and cell division.Additionally, it participates in chromatin organization and it anchors the nuclear pore complexes embedded in the nuclear envelope.he nuclear lamina is assembled by interactions of two lamin polypeptides in which the Î±-helical regions are wound around each other to form a two stranded Î±-helical coiled-coil structure, followed by a head-to-tail association of the multiple dimers.
The Nuclear Envelope The nuclear envelope is a double-layered membrane that encloses the contents of the nucleus during most of the cell's lifecycle.The outer nuclear membrane is continuous with the membrane of the rough endoplasmic reticulum (ER), and like that structure, features numerous ribosomes attached to the surface.he other intermediate filament network is located on the outside of the outer nuclear membrane and is not organized in such a systemic way as the nuclear lamina. The amount of traffic that must pass through the nuclear envelope on a continuous basis in order for the eukaryotic cell to function properly is considerable.