NUCLEOLUS ORGANISER Meaning and
Definition
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The nucleolus organizer is a term used in genetics and cell biology to describe a specific region on a chromosome responsible for the synthesis of ribosomal RNA (rRNA) and the formation of the nucleolus. The nucleolus organizer is usually found on the short arms of acrocentric chromosomes, which are a type of chromosome with a very short p arm and a longer q arm.
The nucleolus organizer contains multiple copies of a DNA sequence called the ribosomal DNA (rDNA). This rDNA sequence is transcribed into a large precursor molecule called the rRNA, which is further processed to form the mature rRNA molecules that make up the structural component of ribosomes. Ribosomes are small molecular machines responsible for protein synthesis and are vital for cellular function.
The nucleolus organizer plays a crucial role in ribosome biogenesis, as it provides the necessary genetic material for ribosome production. It serves as a template for rRNA transcription and serves as a site for the assembly of ribosomal subunits. The nucleolus, a distinct substructure within the cell nucleus, is formed around the nucleolus organizer when rRNA synthesis is actively occurring.
In summary, the nucleolus organizer is a specific region on a chromosome that contains multiple copies of the ribosomal DNA sequence. It is responsible for the production of ribosomal RNA and the formation of the nucleolus, an essential component for the synthesis of ribosomes within the cell.
Common Misspellings for NUCLEOLUS ORGANISER
- bucleolus organiser
- mucleolus organiser
- jucleolus organiser
- hucleolus organiser
- nycleolus organiser
- nhcleolus organiser
- njcleolus organiser
- nicleolus organiser
- n8cleolus organiser
- n7cleolus organiser
- nuxleolus organiser
- nuvleolus organiser
- nufleolus organiser
- nudleolus organiser
- nuckeolus organiser
- nucpeolus organiser
- nucoeolus organiser
- nuclwolus organiser
- nuclsolus organiser
Etymology of NUCLEOLUS ORGANISER
The word "Nucleolus" originates from the Latin word "nucleus", meaning "kernel" or "core". In biology, the term refers to the small and distinct region within the nucleus of a cell. The word "Organiser" comes from the Latin word "organum", which means "instrument" or "tool". In the context of biology, an "organiser" is a structure or substance that directs or coordinates the development of tissue or organs. Hence, the term "Nucleolus Organiser" refers to the specific region within the nucleus that plays a role in organizing or coordinating cellular development.
