Figure
1: Allele frequency change at a nonsynonymous TLR3 SNP in the
Cousin population of the Seychelles warbler over 25 years (1993 - 2018).
Points refer to TLR3 allele frequencies in the adult population
in a given year, the TLR3 A allele in dark
green, the TLR3 C allele in yellow. Solid lines
show linear regressions for the adult population. Dashed lines indicate
frequencies in sampled individuals hatched in each year. The shaded grey
area (right hand axis) shows the percentage of the adult population
(mean: 310 individuals) screened in each year.