Related Experiment Videos
Evaluating linkage between DNA fingerprint bands and quantitative traits in chickens: interactions
E A Dunnington1, L C Stallard, P B Siegel
1Poultry Science Department, Virginia Polytechnic Institute and State University, Blacksburg 24061.
Poultry Science
|June 1, 1993
Summary
Background genome influences gene expression linked to DNA fingerprint (DFP) bands in chickens. Associations between DFP bands and quantitative traits can vary depending on the genetic background, impacting trait expression.
Area of Science:
- Animal genetics
- Quantitative trait genetics
- Molecular genetics
Background:
- Investigating the influence of genetic background on gene expression.
- Understanding the genetic basis of quantitative traits in chickens.
Purpose of the Study:
- To assess how the background genome affects the expression of genes associated with DNA fingerprint (DFP) bands in chickens.
- To determine if associations between DFP bands and quantitative traits are consistent across different genetic backgrounds.
Main Methods:
- Cross-breeding White Plymouth Rocks and White Leghorns to create F1 progeny.
- Measuring quantitative traits (body weight, shank length) and analyzing DNA fingerprint (DFP) patterns.
- Conducting analyses of variance to test for associations between DFP bands and traits, including interactions with dam family.
Main Results:
- Significant associations were found between DFP bands and quantitative traits in 3 out of 48 analyses.
- Two significant interactions between dam family and DFP band presence indicated that trait expression varied with genetic background.
- DFP bands are linked to genes influencing quantitative traits, but this association is not always consistent.
Conclusions:
- The expression of quantitative traits associated with DFP bands can be influenced by the genetic background.
- Associations between molecular markers (DFP bands) and quantitative traits may not be universally applicable across diverse genetic backgrounds in chickens.