Definition of lackey - a servant, especially a liveried footman or manservant, a brownish European moth of woods and hedgerows, the caterpillars of which Definition of lackey - a servant, especially a liveried footman or manservant, a brownish European moth of woods and hedgerows, the caterpillars of which
The nucleolus is the nuclear subdomain that assembles ribosomal subunits in eukaryotic cells. The nucleolar organiser regions of chromosomes, which contain the genes for preâribosomal ribonucleic acid (rRNA), serve as the foundation for nucleolar structure.
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.