Respuesta :
Transposable elements are considered to be responsible for vast range of genome diversity and gene silencing.
Explanation:
Transposable elements are short sequences of DNA that have the ability to move from one location to another in the genome. During this process they copy themselves.
The entire process carried out by transposable elements to copy themselves and move from one location to another is called transposition.
Transposition may result in mutation and is potentially a major source of genome diversity and change. If a transposon inserts itself into the coding region of a gene,it interrupts the coding sequence and inactivates the gene expression.
In addition to this, a transposable element may contain transcription or translation termination signal that will block the gene expression downstream of insertion site.
The main function of Transposable Element is to increase genetic variability and thus regulate gene expression.
- Transposable Elements, also known as jumping genes, are mobile genetic elements that are able to jump from one genomic location to other genomic regions.
- These sequences (Transposable Elements) were in the first moment believed to be parasitic genomic elements whose function was to increase their number in the genome.
- However, nowadays we know that Transposable Elements have an evolutionary significance because they can shape gene expression patterns by inserting within regulatory gene regions (e.g., enhancers or insulators regions).
In conclusion, the main function of Transposable Element is to increase genetic variability and thus regulate gene expression.
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