Dictionary » D » Duplication mutation

Duplication mutation



A type of mutation in which a portion of a genetic material or a chromosome is duplicated or replicated, resulting in multiple copies of that region.


Duplication results from an unequal crossing-over between misaligned homologous chromosomes during meiosis. It may involve a replication of a portion of DNA, or of an entire chromosome.


Compare: deletion mutation.
See also: mutation.

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Re: Re:

... were always there in the gene pool. No, they got into the gene pool via mutation. They were retained in the gene pool because they were either beneficial ... that DNA strands can break and be reattached in the wrong place causing duplication of genes or the entire genome can be duplicated erroneously. ...

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by thoffnagle
Thu Jun 27, 2013 6:22 pm
Forum: Evolution
Topic: Is evolution as simple as we think?
Replies: 38
Views: 23090


... adrenals, etc). Mutations= mistakes. Hospitals are full of people with mutations dying of cancer and other diseases. Think mutations are 'good'? ... conditions may be different. One important type of mutation is gene duplication. A duplicated gene creates redundancy that may, through additional ...

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by thoffnagle
Fri Jun 07, 2013 6:47 pm
Forum: Evolution
Topic: mutations and dependencies
Replies: 29
Views: 21981

Re: Increasing Information For Genetic Algorithm

... a particular sequence remain unchanged, the DNA will evolve to the most mutation-resistant encoding, but if adaptability is required, it will evolve ... on the verge of extinction (possibly from gene loss) whole genome duplication occurs that leads to "overnight" so to speak disappearance ...

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by Cat
Sun Sep 09, 2012 5:20 pm
Forum: Evolution
Topic: Increasing Information For Genetic Algorithm
Replies: 8
Views: 13003

cancers, chromosome mutations

chromosome mutations can be deletion, duplication, inversion or translocation Over-division isn't always caused by altered DNA sequences that code for ...

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by wildfunguy
Thu Aug 16, 2012 7:02 pm
Forum: Genetics
Topic: cancers, chromosome mutations
Replies: 6
Views: 6358

chromosome mutations and cell division

I want to ask if chromosome mutations occur in both mitosis and meiosis. And if a chromosome mutation covers the ... mean that this case is also a gene mutation? chromosome mutations can be deletion, duplication, inversion or translocation

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by biologyisgreat
Fri Jul 27, 2012 4:24 pm
Forum: Genetics
Topic: chromosome mutations and cell division
Replies: 2
Views: 2626
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