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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Re: Which has a greater impact of evolution, mutations or genet

... in stating that, within a population of sexually reproducing organisms, genetic recombination produces more genetic variation compared to mutations and thus is a more important source on of variability on which natural selection ...

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by Cat
Fri Oct 31, 2014 2:26 am
Forum: Evolution
Topic: Which has a greater impact of evolution, mutations or genet
Replies: 1
Views: 1013


... 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: 653

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: 2961

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: 7708

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: 15669
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