RIBOSOMAL DNA Meaning and
Definition
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Ribosomal DNA (rDNA) refers to the genetic material that encodes the ribosomal RNA (rRNA) components of ribosomes. Ribosomes are cellular organelles involved in protein synthesis, and they consist of two subunits composed of rRNA molecules and protein complexes. The rDNA includes genes that code for the rRNA molecules, responsible for the structural and functional integrity of the ribosomes.
In eukaryotic organisms, such as animals and plants, ribosomal DNA is typically found in multiple copies, which are organized into clusters called nucleolar organizer regions (NORs) on the chromosomes. These clusters, often located within the nucleolus, are regions where transcription of rRNA takes place. The rRNA molecules synthesized by these transcription events are critical for the proper assembly and functioning of ribosomes.
Ribosomal DNA plays a significant role in molecular biology and genetic studies, as it not only provides essential components for protein synthesis but also displays high variability between species. Comparisons of rDNA sequences have been extensively used for evolutionary studies, species identification, and understanding phylogenetic relationships. Furthermore, the size and organization of rDNA clusters can vary among different species, providing useful cytogenetic markers.
Overall, ribosomal DNA represents a crucial genetic element involved in the fundamental process of protein synthesis and holds valuable information for biological research across various disciplines.
Common Misspellings for RIBOSOMAL DNA
- eibosomal dna
- dibosomal dna
- fibosomal dna
- tibosomal dna
- 5ibosomal dna
- 4ibosomal dna
- rubosomal dna
- rjbosomal dna
- rkbosomal dna
- robosomal dna
- r9bosomal dna
- r8bosomal dna
- rivosomal dna
- rinosomal dna
- rihosomal dna
- rigosomal dna
- ribisomal dna
- ribksomal dna
- riblsomal dna
- ribpsomal dna
Etymology of RIBOSOMAL DNA
The word "Ribosomal DNA" is derived from several roots:
1. Ribosome: The term "ribosome" is derived from the combination of "ribonucleic acid" (RNA) and "soma" (meaning body), referring to the RNA-protein complex found in cells that is responsible for protein synthesis.
2. DNA: This abbreviation stands for "deoxyribonucleic acid", which is a molecule containing genetic instructions used in the development, functioning, and reproduction of all living organisms.
Therefore, "Ribosomal DNA" refers to the genetic material or DNA found in ribosomes, specifically in the subunits of ribosomes, which play a crucial role in protein synthesis within cells.
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