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PURGING AND DEPRESSION. “Because elevated homozygosity accompanying the evolution of selfing may effectively purge partially recessive, harmful mutations, inbreeding depression should correspondingly decline in response to increased selfing.” https://lnkd.in/dj9hK7n View in LinkedIn

MULTIPLE PHAGE PARASITES PER HOST. "∼35% of infected cells contained multiple viruses. Here, in the 5492 microbial genomes with detectable viral signal, nearly half (2445) contained more than one detectable virus. Most (∼82%) of these co-infections involved multiple Caudovirales, as previously observed, and likely provides mechanism for viral gene exchange and may be more common in some phages displaying rampant mosaicism." https://elifesciences.org/content/4/e08490 View in LinkedIn

NUMERICAL DISADVANTAGE. “By contrast, outcrossing individuals donate, on average, one copy as a seed parent (pollen for that seed having arrived from an outcrossing event with another individual) and another copy as a pollen parent. Inbreeding depression is usually invoked as the principal counterweight to this advantage.” https://lnkd.in/dj9hK7n View in LinkedIn

GREAT UNKNOWN. "More than 25,000 bacterial and archaeal host genomes are available in NCBI RefSeq (January 2015), whereas only 1,531 of their viruses were entirely sequenced and most (86%) of these derive from only 3 of 61 known host phyla. Thus, although advances in high-throughput sequencing expand the bounds of viral sequence space, these data sets are dominated by uncharacterized sequences (usually 60–95%), termed ‘viral dark matter’." https://elifesciences.org/content/4/e08490 View in LinkedIn

NUMERICAL ADVANTAGE. “Selfing can evolve in response to an extremely diverse array of selective agents, but its intrinsic 3 : 2 transmission advantage is ever present (up to 50%). This specific advantage arises because a selfing individual, in a stable population, transmits a total of three copies of alleles: two through self-fertilized seeds, and a single copy as an outcrossed pollen parent.” http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full View in LinkedIn

LESS POLYMORPHISM. “There is considerable support for the notion that selfing lineages harbor less nucleotide polymorphism, although it is unclear how genome-wide nucleotide polymorphism is linked to potential adaptive phenotypic evolution.” http://onlinelibrary.wiley.com/doi/10.1111/nph.12182/full View in LinkedIn

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