Figure 1. Genetic variation between the two populations. (A)
Maximum-likelihood tree from genome-wide single nucleotide polymorphisms
(SNPs). The samples from BY and LJX are shadowed in red and blue
respectively. (B) Principal component analysis plot of the first two
components. The fraction of the variance explained is 5.42% for PC1 and
5.11% for PC2. The samples from BY are clustered more compactly than
those from LJX. (C) Manhattan plot of genetic differentiation between
the BY and LJX population. Green dots indicate outlier regions (1% most
divergent) with F ST > 0.07 (top
panel) and πLJX/πBY > 1.64
(bottom panel). The genes encoding serine/threonine protein kinase PIM1
with complete kinase domain are highlighted by a shaded green column and
the schematic representation of PIM1 domain structure is shown. (D)
Volcano plot indicating the results of differential expression analysis
for testis. The green dots represent the significantly upregulated genes
in BY population and the overlapped gene (PIM1 ) between PSGs and
DEGs is shadowed in green.