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Fig. 3 | BMC Ecology and Evolution

Fig. 3

From: Patterns of introgression vary within an avian hybrid zone

Fig. 3

Hypothesis testing for demographic processes model of selection at two spatial scales. The observed distribution of genotypic classes (light gray) and predicted distribution of genotypic classes (dark gray) as predicted from observed relative parental genotypic densities, assuming random mating. Left panel a compares patterns at a broad scale in the center and south of the hybrid zone, and right b compares fine scale patterns between inland and coastal sites within the center of the hybrid zone. Genotypic classes from left to right: Nelsonā€™s Sparrow (NESP), Backcrossed Nelsonā€™s Sparrow (BC_NESP), recent-generation hybrids (F1/F2), Backcrossed Saltmarsh Sparrow (BC_SALS), and Saltmarsh Sparrow (SALS) (*denotes significance at the 0.05 confidence level)

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