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.
The nucleolus directs the assembly of proteins within the cell nucleus. The nucleolus is the part of the nucleus containing most of the genes that code for the synthesis of ri â¦ bosomal RNA (rRNA: the RNA molecules found in ribosomes).So rRNA is synthesized within the nucleolus.While still within the nucleolus, these rRNA molecules are assembled, together with many protein molecules. into two subunits of future ribosomes. The subunits leave the nucleus through pores in the nuclear membrane, and enter the cytoplasm.o rRNA is synthesized within the nucleolus. While still within the nucleolus, these rRNA molecules are assembled, together with many protein molecules. into two subunits of future ribosomes. The subunits leave the nucleus through pores in the nuclear membrane, and enter the cytoplasm.