Fig. 4: Differences in gene properties across age classes.
From: Evolution of novel genes in three-spined stickleback populations
a Fraction of genes expressed only in testes or ovaries. The p value shown here is the result of a 2 × 2 chi-square test. b Fraction of genes overlapping with CNVs. The p value shown here is the result of a 2 × 2 chi-square test between the “new” and “ancient” classes. ****p < 0.0001. c Fraction of genes overlapping with regions with FST indicating positive selection. The p value shown here is the result of a 2 × 2 chi-square test between the “new” and “ancient” classes. *p < 0.05.
