Dictionary » G » Gene mutation

Gene mutation


noun, plural: gene mutations

A genetic change at the level of the genes; a change in the nitrogenous base sequences.


Gene mutations may occur spontaneously during replication (called spontaneous mutations) or they may be induced through mutagens (called induced mutations).

Gene mutations based on the mechanism that caused it are as follows:

Word origin: gene + mutation


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... A patient has been brought to you with symptoms suggesting the human gene which is equivalent to the Drosophila TCF gene is not being transcribed ... it is normally transcribed. Your hypothesis is that the patient has a mutation in the human equivalent of the Drosophila DSH gene, and that this ...

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by hanna92
Thu Oct 16, 2014 4:44 pm
Forum: Genetics
Topic: Mutation
Replies: 0
Views: 70

Polymorphism and Mutation

What is the difference between Gene Polymorphism and Gene Mutation :?: :?: :?: please give a clear concept. :|

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by Helics
Tue Mar 04, 2014 4:33 pm
Forum: Molecular Biology
Topic: Polymorphism and Mutation
Replies: 2
Views: 2031

What makes dominant allele dominant?

1) each gene can have from one to many alleles 2) it's not only about expression. The difference ... anywhere from transcription to protein post-translational modifications. There can be mutation in the promotor changing significantly expression. If the binding of ribosome will ...

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by JackBean
Thu Feb 27, 2014 5:20 pm
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 7
Views: 4895

Re: Beneficial mutations vs harmful

Natural selection; survival to reproduce. Collections of genes (or more accurately a given gene variant) with better fitness, tend to survive to reproduce more often than those without. Basically harmful mutations tend to lower fitness, whereas beneficial mutations tend to increase ...

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by NMLevesque
Fri Nov 22, 2013 6:51 pm
Forum: Evolution
Topic: Beneficial mutations vs harmful
Replies: 12
Views: 9573

Re: Beneficial mutations vs harmful

The majority of mutations are neutral (I read 70%)*, the next majority are harmful, and the smallest percent ... a given species, and the advantage would then allow that specimen to proliferate its genetic information containing the beneficial mutation. I just don't get it. *even these ...

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by Coelacanth
Sun Oct 13, 2013 6:08 am
Forum: Evolution
Topic: Beneficial mutations vs harmful
Replies: 12
Views: 9573
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