What Are Transposons?
DNA transposition, also known as transposition, is a rearrangement of genetic material mediated by a transposition element.
Transposition
Right!
- Chinese name
- Transposition
- Foreign name
- Transposition
- Find people
- Barbara McClintock
- Find the time
- 1940s
- DNA transposition, also known as transposition, is a rearrangement of genetic material mediated by a transposition element.
- Transposition
- Bacteria, viruses, and eukaryotic cells have a piece of DNA on their chromosomes that can move through the genome. This transfer is called transposition. The DNA fragments that carry the genes required for the transposition process and can move on the chromosome are called transposable elements or transposons. This phenomenon is often controlled by transposases encoded on transposons.
- Unlike other processes that recognize DNA, transposition does not require extensive homology between the transposon and its target site. Transposons behave much like lysogenic phages except that they are originally located on a chromosome and can move between different positions on the same chromosome. Transposons do not have a life cycle like a virus and are different from phages, nor do they replicate and exist independently outside the chromosome like a plasmid, unlike a plasmid. [1]
- The transposition phenomenon was first discovered by Barbara McClintock in the genetics of corn in the 1940s (B. McClintock won the Nobel Prize for 1983 for this discovery), and has been the most extensively studied in bacteria.