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CAUSES AND CONSEQUENCES. "Ecological selection as the cause and sexual differentiation as the consequence of species divergence?" https://lnkd.in/ggrcHvH View in LinkedIn

UNISEXUALITY IN PLANTS. "Unisexual plant species and their mixed forms appear to be distributed throughout the flowering plant families (around three quarters of families include dioecious species) suggesting independent evolutionary events. However, the incidence of unisexuality is not evenly spread throughout the plant kingdom." https://lnkd.in/gb3zS32 View in LinkedIn

SEXUAL SELECTION. "The role of sexual selection in speciation with gene flow, however, is less clear; some studies suggest it can drive the speciation process, while others suggest it can inhibit it, under different conditions." https://lnkd.in/g9StYjV View in LinkedIn

OVERLOOKED. "Darwin (1871) largely neglected the possibility that sexual selection might also operate in plants. This may have been because of their non-sentient habit, primarily hermaphroditic sexual condition, and less conspicuous sexual dimorphism in dioecious species." https://lnkd.in/ge7JD6J View in LinkedIn

GENE FLOW AND SPECIATION. "Speciation in the presence of gene flow, in sexual species, can be driven by two general processes: (i) nonrandom mating that results in assortative mating, the mating of like with like, which reduces gene flow between groups, and (ii) divergent selection, which favors extremes in a population and thus can lead to a splitting of the species." https://lnkd.in/g9StYjV View in LinkedIn

DIOECIOUS TRAITS. "Recent large-scale molecular phylogenetic analyses confirm some of the correlations between dioecy and ecological traits and highlight the diversification of dioecious lineages associated with ecological features" such as woodiness, climber habit, and fleshy fruits. https://lnkd.in/g_fheyF View in LinkedIn

GENE FLOW PROMOTES COHESION. "One of the most intriguing aspects of speciation is how it might proceed under the most difficult of circumstances, namely in the face of gene flow. Gene flow poses an especially interesting problem for evolutionary theorists because it counters the forces driving differentiation between species, leading to continued cohesion across them." https://lnkd.in/g9StYjV View in LinkedIn

CHARACTERISTICS. "Dioecy has been correlated with plant spatial distribution, tropical floras, oceanic islands, and oligotrophic environments, and since Darwin (1877), resource allocation has been suggested as a causal factor in the evolution and maintenance of dioecy." https://lnkd.in/g_fheyF View in LinkedIn

GENE FLOW AND SPECIATION. "The role of gene flow during speciation and how it contributes to the emergence of islands of differentiation are key questions in speciation genomics." https://lnkd.in/gTNiFfV View in LinkedIn

GENE FLOW AND TIME. "Both time and low gene flow are the key factors by which different biological species arise. The divergence process among lineages and the development of pre- or postzygotic isolation occur when gene flow events are lacking." https://lnkd.in/gBACF7A View in LinkedIn