Linked Life Data

9342845

Source:http://linkedlifedata.com/resource/pubmed/id/9342845

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1997-11-21
pubmed:abstractText
Geographical clines may reflect the action of natural selection on genetic polymorphisms. In Drosophila melanogaster several latitudinal clines occur for many characters like allozymes, inversions and quantitative traits. The identical nature of these clines on the various continents, both on the Northern and Southern Hemispheres strongly suggests adaptation to specific stress factors. The alcohol dehydrogenase (Adh) polymorphism shows high frequencies of the S allele in tropical regions and declines with latitude. The reasons for this cline are difficult to determine because of the entanglement with other polymorphisms varying with latitude. In this paper the tentative connections with other polymorphisms like alpha-Gpdh, In(2L)t, body size and development time are reviewed with respect to the possible environmental stress factors involved. It is concluded, also from recent experiments, that the (2L)t inversion plays a dominant role in resistance to high temperature and is partly responsible for the Adh cline. Further research is aimed at the specific selective forces acting on Adh, focussing on the physiological and life history aspects.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1023-294X
pubmed:author
pubmed:issnType
Print
pubmed:volume
83
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
97-115
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Worldwide latitudinal clines for the alcohol dehydrogenase polymorphism in Drosophila melanogaster: what is the unit of selection?
pubmed:affiliation
Department of Genetics, University of Groningen, Haren, The Netherlands.
pubmed:publicationType
Journal Article, Review