Behavior is actually more complicated than innate or learned. Most behaviors are a mix of the two, neither completely innate nor entirely learned. For instance, some innate behaviors -- such as flying in insects -- can be perfected over time and through experience.
the nucleolus is a prominent sub nuclear structure that is not bound by a membrane and resides within the nuclear matrixthough known to exist since the eighteenth century the primary function of the nucleolus was not discovered until the 1960she nucleolus is a prominent sub nuclear structure that is not bound by a membrane and resides within the nuclear matrix
Structure & Function. The nucleolus is a very dense structure inside the nucleolus. Depending on what the cell is or how big it is, the cell may have more than one nucleolus because of how many ribosomes it needs.It doesn't have a membrane so DNA inside the nucleus can easily be transferred to the nucleolus to transcript it to rRNA.epending on what the cell is or how big it is, the cell may have more than one nucleolus because of how many ribosomes it needs. It doesn't have a membrane so DNA inside the nucleus can easily be transferred to the nucleolus to transcript it to rRNA.