Related Experiment Video
Updated: Jun 18, 2025

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
Published on: June 6, 2025
Digest: Evaluating sexual conflict in the genome
Avishikta Chakraborty1, Débora Y C Brandt1
1Division of Biosciences, Department of Genetics, Evolution and Environment, University College London-Bloomsbury Campus, London, United Kingdom.
Researchers explored the genetic roots of sexual conflict in fruit flies (Drosophila melanogaster) due to differing size selection pressures between sexes. A specific chromosome region showed evidence of this conflict, suggesting its role in sex-specific adaptations.
Area of Science:
- Evolutionary biology
- Genomics
- Animal behavior
Background:
- Sexual conflict arises when male and female reproductive interests diverge.
- Sexual size dimorphism and multivariate allometry are key traits influenced by selection pressures.
- Understanding the genetic architecture of these traits is crucial for evolutionary studies.
Purpose of the Study:
- To investigate the genomic basis of sexual conflict in Drosophila melanogaster.
- To identify genetic regions under sexually discordant selection.
- To explore the evolution of sex-specific adaptations.
Main Methods:
- Analysis of morphological traits related to sexual dimorphism and allometry.
- Genomic scans to detect regions under sexually discordant selection.
- Utilizing Drosophila melanogaster as a model organism.
Main Results:
- Morphological changes in sexual dimorphism and multivariate allometry were observed.
- No single genetic variant strongly influenced polygenic traits like body size.
- A specific region on chromosome 3L exhibited signs of sexually discordant selection.
Conclusions:
- The study identifies a potential genomic region involved in sexual conflict.
- Findings offer insights into the genetic mechanisms of sex-specific adaptations.
- Highlights the complexity of polygenic trait evolution under sexual conflict.
More Related Videos
11:49A Novel Saturation Mutagenesis Approach: Single Step Characterization of Regulatory Protein Binding Sites in RNA Using Phosphorothioates
Published on: August 21, 2018
08:21Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye
Published on: January 14, 2021
Related Concept Videos
The Ratio of X Chromosome to Autosomes
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
Gene Conversion
Crossing Over
Epistasis Analysis
Complementation Tests
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Genetic Screens
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...