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%ما هو (من)٪ 1 - تعريف
DUPLICATION OF A GENE SEQUENCE WITHIN A GENOME
Duplicate gene; Chromosomal duplication; Chromosomal duplications; Chromosome duplication; Chromosome duplications; Duplication (genetics); Ancient gene duplication; Amplification (molecular biology); Tandem duplications; Tandem duplication; Duplication (chromosomal); Retrogene; Nucleotide duplication
Gene duplication
Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic material is generated during molecular evolution. It can be defined as any duplication of a region of DNA that contains a gene.
Tandem exon duplication
Tandem Exon Duplication; Exon duplication
Tandem exon duplication is defined as duplication of exons within the same gene to give rise to the subsequent exon. A complete exon analysis of all genes in Homo sapiens, Drosophila melanogaster, and Caenorhabditis elegans has shown 12,291 instances of tandem duplication in exons in human, fly, and worm.
duplicate
WIKIMEDIA DISAMBIGUATION PAGE
Duplicator; Duplicates; Duplicated; Duplicate; Duplication (disambiguation); Duplicate (disambiguation); Duplicate (film); Two-fold; Duplicating
(duplicated)
1.
If you duplicate something that has already been done, you repeat or copy it.
His task will be to duplicate his success overseas here at home...
= replicate
VERB: V n
•
Duplicate is also a noun.
Charles scored again, with an exact duplicate of his first goal.
N-COUNT
2.
To duplicate something which has been written, drawn, or recorded onto tape means to make exact copies of it.
...a business which duplicates video and cinema tapes for the movie makers.
= copy
VERB: V n
•
Duplicate is also a noun.
I'm on my way to Switzerland, but I've lost my card. I've got to get a duplicate.
N-COUNT: also in N
3.
Duplicate is used to describe things that have been made as an exact copy of other things, usually in order to serve the same purpose.
He let himself in with a duplicate key.
ADJ: ADJ n
4.
see also duplication
ويكيبيديا
Gene duplication
Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic material is generated during molecular evolution. It can be defined as any duplication of a region of DNA that contains a gene. Gene duplications can arise as products of several types of errors in DNA replication and repair machinery as well as through fortuitous capture by selfish genetic elements. Common sources of gene duplications include ectopic recombination, retrotransposition event, aneuploidy, polyploidy, and replication slippage.
