Gene amplification

Some organisms have evolved mechanisms of gene amplification to provide gene products needed in large quantities. These mechanisms include:
Elaboration of small "extrachromosomal" units that replicate to high copy number (rDNA); ...
Full article >>>

Dr. Lawrence Brody, of the National Human Genome Research Institute's Genetic and Molecular Biology Branch, defines gene amplification.
related
terms:
cell, deoxyribonucleic acid (DNA), gene, oncogene ...
Full article >>>

Gene amplification
Multiple copies of a single gene within a cell.
Gene conversion
An genetic event that produces abnormal segregations by non-reciprocal recombination.
Full article >>>

Gene amplification Repeated copying of a piece of DNA; a characteristic of tumor cells.
See also: gene, oncogene ...
Full article >>>

gene amplification
The selective synthesis of DNA, which results in multiple copies of a single gene, thereby enhancing expression.
gene cloning ...
Full article >>>

Gene Amplification
In Drosophila (fruit flies), the chorion (eggshell) gene is copied many times in certain cells of the oviduct. These cells make large quantities of the protein needed to surround the egg.
Full article >>>

Gene amplification. The presence of multiple genes. Amplification is one mechanism through which proto-oncogenes are activated in malignant cells.
Full article >>>

(See Dominant gene, Fusion gene, Gene amplification, Gene expression, Gene flow, Gene pool, Gene splicing, Gene translocation, Recessive gene, Regulatory gene.) Gene amplification. The presence of multiple genes.
Full article >>>

Gene amplification -- any process by which specific DNA sequences are replicated disproportionately greater than their representation in the parent molecules; during development, some genes become amplified in specific tissues.
Full article >>>

Expression of cathepsin B is regulated at many different levels, from gene amplification, use of alternative promoters, increased transcription and alternative splicing, to increased stability and translatability of transcripts.
Full article >>>

The probable answer: gene amplification. Having multiple copies of genes permits a high level of gene expression; that is, abundant transcription and translation to produce the gene products.
Full article >>>

Other genes undergo a process called gene amplification where there may be two copies of the gene present in normal cells and 20 or 50 or a hundred copies of the gene, often a growth promoting gene, present in cancer cells, ...
Full article >>>


'"/>