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LESS DIVERSITY. “Selfing may constrain adaptive evolution by reducing the levels of polymorphism and, particularly, additive genetic variation.” http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full View in LinkedIn

NO NEED TO ATTRACT POLLINATORS. “The suite of morphological adaptations that accompanies shifts to self-fertilization, and comprises the ‘selfing syndrome’, is dominated by quantitative reductions in the size of floral organs.” https://lnkd.in/dj9hK7n View in LinkedIn

PREVENTION OF SELFING. “Morphological adaptations that prevent self-pollination (e.g. flower size, dichogamy or herkogamy) may involve a much smaller loss of complexity.” https://lnkd.in/dj9hK7n View in LinkedIn

SELF-INCOMPATIBILITY. “At one end of the spectrum of complexity, self-incompatibility systems involve closely co-evolving pistil- and pollen-expressed genes. The derivation of selfing in ancestrally self-incompatible lineages causes the loss of tightly co-evolved allelic diversity in the genes embedded at the S-locus.” https://lnkd.in/dj9hK7n View in LinkedIn

REASSEMBLING OUTCROSSING. “The genetic basis and complexity of the outcrossing mechanism are important because they control directly the likelihood that an outcrossing phenotype can be reassembled in a selfing population.” https://lnkd.in/dj9hK7n View in LinkedIn

HYPOTHETICAL. “In the absence of pollinators, reversals would be impossible, with the sole exception of a simultaneous shift to an abiotic mode of cross-pollination.” https://lnkd.in/dj9hK7n View in LinkedIn

A SOURCE OF GENETIC VARIATION. “Sexual reproduction has been observed in nearly all branches of the eukaryotic tree of life. It provides an important mechanism to establish genetic variation by combining genetic information of two parental lineages.” https://lnkd.in/eC8eb-V View in LinkedIn

IMPACT OF POLLINATORS. “Reversals to outcrossing are also unlikely when selfing evolves in pollinator-limited environments, because pollination vectors are necessary to produce outcrossed seed.” http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full View in LinkedIn

HEART OF EVOLUTION. “Even though chromosomal rearrangements have been associated with diseases and reduced fitness, they are also major drivers of evolution. They contribute to adaptation to novel or changing environments and even to speciation by reproductive isolation.” https://lnkd.in/eC8eb-V View in LinkedIn

STACKED DECK. “Outcrossing mutations would have to overcome both the transmission advantage of selfing and the greater seed production of plants capable of self-fertilization. These are potentially large disadvantages at the gene and individual levels.” http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full View in LinkedIn