Ecological and genetic effects of cutting in an Alnus trabeculosa Hand.-Mazz. (Betulaceae) population

Article Abstract:

Research has been conducted on Alnus trabeculosa Hand.-Mazz. (Betulaceae) population. The ecological and genetic effects of cutting have been investigated via comparison of a cut and uncut portions, and the authors have discovered no difference in genetic variation between the portions, but have found differences in the degree of sprouting.

author: Takahashi, M., Miyamoto, N., Karamoto, N.
Japan, Population genetics, Alder, Alders

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Genetics of Drosophila simulans male mating discrimination in crosses with D. melanogaster

Article Abstract:

The authors have investigated genetic bases of sexual isolation between Drosophila simulans and D. melanogaster. They demonstrate that D. simulans males discriminate D. melanogaster females, and that genetics of this discrimination is reflective of the inheritance mode of a single locus located in chromosome II near the net mutation.

author: Carracedo, M. C., Asenjo, A., Casares, P.
Spain, Gene mutations, Gene mutation, Animal reproduction, Genetic discrimination

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Thermal tolerance trade-offs associated with the right arm of chromosome 3 and marked by the hsr-omega gene in Drosophila melanogaster

Article Abstract:

Research has been conducted on Drosophila melanogaster which demonstrates different clinal changes in resistance to heat and cold. The authors describe their study of the variation at the polymorphic site in the heat shock hsr-omega gene in D. melanogaster that maps to the chromosome 3 right arm.

author: Anderson, A. R., Collinge, J. E., Hoffmann, A. A., Kellett, M., McKechnie, S. W.
Australia

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subjects list: Research, Physiological aspects, Genetic aspects, Genetic markers, Variation (Biology), Heredity, Drosophila, Chromosomes
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