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
Chromosomes play an essential part in cellular replication and division. These must be copied, and divided and passed onto daughter cells, which will have identical copies of the genes as the parent cell. Nucleolus . The nucleolus is a prominent region within the nucleus that is not membrane bound. It is the site of rRNA synthesis, where the rRNA is transcribed and assembled. The nucleolus is also the site of ribosome assembly, where the 40S and the 60S ribosomal subunits are transcribed.