Figure 4.
Neighbour-joining trees of Nei's genetic distance (DA). (a) Genome-wide distance estimate representing putatively neutral genetic structure for all collections by phylogenetic lineage (7 324 591 SNPs). (b) Distance estimate from candidate region on chromosome Ots28 (580 SNPs spanning from GREB1 L through ROCK1) representing relationship of collections with premature and mature phenotypes. Collection numbers correspond to site list in electronic supplementary material, table S1 and locations in figure 1. ‘Mixed’ indicates cryptic ascent timing phenotypes that were combined in one collection that was then split into early premature and late mature groups. (Online version in colour.)