Resistance of Genetic Correlation Structure to Directional Selection in Drosophila melanogaster

Evolution ◽  
1990 ◽  
Vol 44 (8) ◽  
pp. 1990 ◽  
Author(s):  
Gerald S. Wilkinson ◽  
Kevin Fowler ◽  
Linda Partridge
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Correlation ◽  
Directional Selection ◽  
Correlation Structure

scholarly journals RESISTANCE OF GENETIC CORRELATION STRUCTURE TO DIRECTIONAL SELECTION INDROSOPHILA MELANOGASTER

Evolution ◽  
1990 ◽  
Vol 44 (8) ◽  
pp. 1990-2003 ◽  
Author(s):  
Gerald S. Wilkinson ◽  
Kevin Fowler ◽  
Linda Partridge
Keyword(s):  
Genetic Correlation ◽  
Directional Selection ◽  
Correlation Structure

Evolutionary Divergence, Shape Change, and Genetic Correlation Structure in the Rodent Mandible

1992 ◽  
Vol 41 (2) ◽  
pp. 196 ◽  
Author(s):  
William R. Atchley ◽  
David E. Cowley ◽  
Claus Vogl ◽  
Tracy McLellan
Keyword(s):  
Genetic Correlation ◽  
Shape Change ◽  
Correlation Structure ◽  
Evolutionary Divergence

A genetic correlation between the sexes for mating speed in Drosophila melanogaster

1992 ◽  
Vol 43 (3) ◽  
pp. 389-396 ◽  
Author(s):  
Marina Stamenkovic-Radak ◽  
Linda Partridge ◽  
Marko Andjelkovic
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Correlation ◽  
Mating Speed

scholarly journals Investigating the interaction between inter-locus and intra-locus sexual conflict using hemiclonal analysis in Drosophila melanogaster

2021 ◽  
Author(s):  
Manas Geeta Arun ◽  
Tejinder Singh Chechi ◽  
Rakesh Meena ◽  
Shradha Dattaraya Bhosle ◽  
Srishti ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Sex Ratio ◽  
Genetic Correlation ◽  
Empirical Evidence ◽  
Sexual Conflict ◽  
Genetic Basis ◽  
Operational Sex Ratio ◽  
Female Fitness ◽  
Male And Female ◽  
Males And Females

Divergence in the evolutionary interests of males and females leads to sexual conflict. Traditionally, sexual conflict has been classified into two types: inter-locus sexual conflict (IeSC) and intra-locus sexual conflict (IaSC). IeSC is modeled as a conflict over outcomes of intersexual reproductive interactions mediated by loci that are sex-limited in their effects. IaSC is thought to be a product of selection acting in opposite directions in males and females on traits with a common underlying genetic basis. While in their canonical formalisms IaSC and IeSC are mutually exclusive, there is growing support for the idea that the two may interact. Empirical evidence for such interactions, however, is limited. Here, we investigated the interaction between IeSC and IaSC in Drosophila melanogaster. Using hemiclonal analysis, we sampled 39 hemigenomes from a laboratory-adapted population of D. melanogaster. We measured the contribution of each hemigenome to adult male and female fitness at three different intensities of IeSC, obtained by varying the operational sex-ratio. Subsequently, we estimated the intensity of IaSC at each sex-ratio by calculating the intersexual genetic correlation for fitness and the proportion of sexually antagonistic fitness-variation. Our results indicate a statistically non-significant trend suggesting that increasing the strength of IeSC ameliorates IaSC in the population.

scholarly journals The genetic analysis of the direct and correlated response to selection for chaetae in Drosophila melanogaster

1973 ◽  
Vol 22 (1) ◽  
pp. 1-7
Author(s):  
W. R. Scowcroft
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Analysis ◽  
Genetic Correlation ◽  
Statistical Approach ◽  
Correlated Response ◽  
Minor Importance ◽  
Response To Selection ◽  
Genetic Changes ◽  
Selection For ◽  
Selection Of

SUMMARYThe direct and correlated response to selection of scutellar microchaetae and scutellar bristles has been analysed by determining the contribution of the three major chromosomes, alone and in combination with each other, to the overall response. The results of the analysis confirm a previous finding, based on a formal statistical approach, that response to selection for microchaetae had highly pleiotropic effects on scutellar bristles. In lines selected, each for high and low microchaetae, genetic changes in the 2nd and 3rd chromosomes are pre-eminent and essentially equal. Inter-chromosomal interactions are of relatively minor importance in interpreting the response to selection for microchaetae but assume greater importance with respect to the correlated character. The results are discussed in terms of the genetic correlation between fitness and the character measured.

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