We performed a genome-wide differentiation scan to localize variants probably affecting egg versus meat production traits.
The study reported here describes a direct comparison of a linkage mapping study with a genetic differentiation scan for the identification of genomic regions associated with population/breed differences.
The calvarial cells were pulsed with 99mTc-MDP at different time points (day 0, 4, 7, 14, or 21 post-differentiation), and scanned by a planar gamma imager together with 99mTc standards.
Craniofacial bone and TM showed different radio-opacity, which allowed their easy differentiation on the scans after regulating the brightness and contrast.
To further explore the genetic basis of ecotypic differentiation, a genome scan was performed using 14,708 DArTseq markers to identify "outlier markers" undergoing differential selection between the precocious Lighthouse population (n = 32) and the nearest normal population, Tidal River (n = 30).
Three weeks after injection we assessed joint diameters, histology, μCT scans, and differentiation of bone marrow- and synovia-derived osteoblasts.
Genome-wide scans of differentiation between incompletely reproductively isolated populations have largely revealed the predicted heterogeneous pattern (Nosil et al. 2009; Nosil and Feder 2012).
We performed high-density genome-wide scans for differentiation between sympatric M and S forms, as well as M/S hybrids, at the Njabakunda site and at single sites from each of Senegal and Guinea-Bissau.
Interestingly, a recent scan of differentiation in an invasive marine invertebrate, the gastropod Crepidula fornicata, identified differentiated backgrounds characterized by a high rate of outliers in the native range of the species in America, but only one background was proved to have invaded Europe, and no outliers have been identified in the invaded range (Riquet et al. 2013).
Finally, a scan of phenotypic differentiation of expression levels was performed (ePST scan).
