Other terms
Amplification, Gene
Description
Gene Amplification: A selective increase in the number of copies of a gene coding for a specific protein without a proportional increase in other genes. It occurs naturally via the excision of a copy of the repeating sequence from the chromosome and its extrachromosomal replication in a plasmid, or via the production of an RNA transcript of the entire repeating sequence of ribosomal RNA followed by the reverse transcription of the molecule to produce an additional copy of the original DNA sequence. Laboratory techniques have been introduced for inducing disproportional replication by unequal crossing over, uptake of DNA from lysed cells, or generation of extrachromosomal sequences from rolling circle replication.
Pervious tree
Next tree
Other locations in tree
Legal notice
The U.S. National Library of Medicine is the creator, maintainer, and provider of the data above.
The version of the data is 2010 MeSH. Last reviewed April 26, 2010. No modification has been made in the content of the file.
Neither the United States Government, nor any of its agencies, contractors, subcontractors or employees makes any warranties, expressed or implied, with respect to data contained in the database, and, furthermore, assumes no legal liability for any party's use, or the results of such use, of any part of the database.
You will not assert any proprietary rights to any portion of the database, or represent the database or any part thereof to anyone as other than a United States Government database.
The MeSH data carry an international copyright outside the United States, its Territories or Possessions. These terms and conditions are in effect as long as the user retains any of the MeSH data obtained from this site.