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Dictionary » G » Genetic locus

Genetic locus

Definition

noun, plural: genetic loci

The location of a gene (or of a significant sequence) on a chromosome or on a linkage map.


Supplement

For example, the locus of the gene OCA1 (or Oculocutaneous Albinism Type 1, the gene associated with albinism) is on 11q1.4-a2.1, which means it is on the long arm of chromosome 11, between sub-band 4 of band 1 to sub-band 1 of band 2.


Word origin: locus » Latin stlocus, a place.

Also called: gene locus.
See also: allele.


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Re: Genetic diversity on squirrels

... the data in the table is the allele frequency for the three alleles of locus 1 and that each column is one taxon—and here I reveal my ignorance of genetic terms because I don’t know for certain what a taxon is and I haven’t bothered to look ...

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by blcr11
Fri Sep 12, 2008 4:37 pm
 
Forum: Genetics
Topic: Genetic diversity on squirrels
Replies: 3
Views: 755

Re: Genetic diversity on squirrels

... of analysis for all ten of your loci before answering the question about percentages of polymorphic loci within taxons. The table is only for one locus.

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by blcr11
Fri Sep 12, 2008 1:55 pm
 
Forum: Genetics
Topic: Genetic diversity on squirrels
Replies: 3
Views: 755

Genetic diversity on squirrels

Some genetics homework I have on squirrels.. 1) Percentage of polymorphic loci within taxon (%P) 2) Average number of alleles per loci 3) For each locus within each taxon, calculate allele frequency of each allele at each locus. 4) Heterozygosity at each locus for each taxon. 5) Average heterozygosity ...

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by Ph0BoLuS
Fri Sep 12, 2008 12:00 pm
 
Forum: Genetics
Topic: Genetic diversity on squirrels
Replies: 3
Views: 755

The Hitchhiking Gene

Despite genetic recombination, it is theoretically possible that a harmful gene can "ride on the coat tails" of a beneficial one favored by selection if it is near the locus of the latter and so avoid separation by chromosomal crossovers. While very rare, it ...

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by Morphoeclectic
Fri May 02, 2008 2:07 pm
 
Forum: Genetics
Topic: The Hitchhiking Gene
Replies: 0
Views: 914

Re: genetic disease questions

First, do you know for sure that your Peutz-Jeghers syndrome is caused by STK11/LKB1? That is not the only gene locus responsible (other unknown genes could be involved). You need to be tested to find out. If it’s due to another mutation then nothing is known (neither chances not ...

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by Cat
Mon Apr 21, 2008 5:48 pm
 
Forum: Genetics
Topic: genetic disease questions
Replies: 2
Views: 780
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