Publication Date:
2001-01-06
Description:
Rapid adaptive fixation of a new favorable mutation is expected to affect neighboring genes along the chromosome. Evolutionary theory predicts that the chromosomal region would show a reduced level of genetic variation and an excess of rare alleles. We have confirmed these predictions in a region of the X chromosome of Drosophila melanogaster that contains a newly evolved gene for a component of the sperm axoneme. In D. simulans, where the novel gene does not exist, the pattern of genetic variation is consistent with selection against recurrent deleterious mutations. These findings imply that the pattern of genetic variation along a chromosome may be useful for inferring its evolutionary history and for revealing regions in which recent adaptive fixations have taken place.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nurminsky, D -- Aguiar, D D -- Bustamante, C D -- Hartl, D L -- GM 60035/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jan 5;291(5501):128-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Cell Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11141564" target="_blank"〉PubMed〈/a〉
Keywords:
Alleles
;
Animals
;
Axonemal Dyneins
;
Drosophila/genetics
;
*Drosophila Proteins
;
Drosophila melanogaster/*genetics
;
Dyneins/*genetics
;
*Evolution, Molecular
;
*Genes, Insect
;
*Genetic Variation
;
Likelihood Functions
;
Logistic Models
;
Mutation
;
Polymorphism, Genetic
;
Selection, Genetic
;
X Chromosome/*genetics
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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