Figure 5
From: Evolution of testicular architecture in the Drosophilidae: A role for sperm length
Phylogenetic relationships for the members of the Drosophilidae that were included in the comparative analysis of independent contrasts (see also Figure 6B), the number of first spermatocytes per cyst in those species, and the species-groups for the species within the genus Drosophila . Note that a) the same number of first spermatocytes per cyst can be found in several unrelated groups and b) that the number of first spermatocytes per cyst can vary within a species-group.