Tuomas Leinonen

TL;DR: A comprehensive review and meta‐analysis of the empirical studies that have compared quantitative genetic (QST) and neutral marker (FST) differentiation among natural populations finds evidence to suggest that QST and FST values across studies are positively correlated, but the significance of this finding remains unclear.

TL;DR: Comparative studies of the divergence of quantitative traits and neutral molecular markers, known as QST–FST comparisons, provide a means for researchers to distinguish between natural selection and genetic drift as causes of population differentiation in complex polygenic traits.

TL;DR: Investigation of phenotypic and genetic differentiation among Fennoscandian threespine stickleback populations found that the highest degree of differentiation occurred between sea and freshwater habitats, and comparisons by habitats revealed that body shape divergence between lake and marine populations and even among marine populations, can be strongly influenced by natural selection.

TL;DR: It is hypothesized that degeneration of the Y chromosome results in regulatory mutations that create a sex-specific expression pattern and that this physical concentration of sex-biased expression on the nascent sex chromosome may be a key feature characterizing intermediate phases of sex chromosome evolution.

TL;DR: By studying the inheritance of expression levels in 10,495 genes in a threespine stickleback pedigree, it is shown that 74–98% of transcripts exhibit significant additive genetic variance, and it is suggested that broad adaptive potential may be found within the transcriptome.