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ENGULFMENT SOLVED. "Importantly, what is already in place in Paulinella is a mechanism to coordinate the replication of the cyanelle’s DNA with the replication of the amoeba’s DNA such that, at each mitosis, each daughter cell inherits two cyanelles." https://lnkd.in/ebVhXPf View in LinkedIn

MATING TYPE. "Genome rearrangements and chromosomal translocations lead to postzygotic blocks to sexual reproduction, but if an individual with a rearranged genome simply switches mating type, it now has a mate with a colinear genome with whom to found a new species." https://lnkd.in/ebVhXPf View in LinkedIn

SEX GENES AND SPECIATION. "Postzygotic incompatability between nuclear and mitochondrial genomes or between multiple nuclear loci have both been shown to play a role in Saccharomyces species incompatibilities. Hence sex-related genes are integral to establishing species boundaries." https://lnkd.in/ebVhXPf View in LinkedIn

EUKARYOTIC SPECIATION. "A signature feature of eukaryotes is that they speciate, segregating into closely related populations that fail to respond to each other’s mating cues to form zygotes (prezygotic isolation) and/or form zygotes that fail to produce a viable next generation (postzygotic isolation)." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

PLASTID ELIMINATION. "In land plants, plastids are excluded from the sperm cell or are left behind in synergid cells during fertilization; mechanisms are again unknown." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

SPERM ORGANELLE ELIMINATION. "Notably, in the vertebrate examples, the sperm organelles enter the egg but are quickly and selectively eliminated in the zygote in a species-specific fashion." https://lnkd.in/ebVhXPf View in LinkedIn

ORGANELLE GENOME DESTRUCTION. "Although there is as yet no information on the molecules that exert mating-type uniparental control in most systems, the selective destruction of one set of organelle genomes has been shown in several disparate radiations." https://lnkd.in/ebVhXPf View in LinkedIn

HETEROPLASMY DEFENSE. "A third consequence of a uniparental system is that it guards against “heteroplasmy,” the presence of two or more different organelle genomes in the same organism. In a recent study, mice were artificially manipulated to be heteroplasmic for mitochondrial genomes, and they showed a number of developmental and cognitive defects; the investigators suggest that disparate OXPHOS subunits encoded by the two genomes might assemble into defective complexes." https://lnkd.in/ebVhXPf View in LinkedIn

ORGANELLE GENOME ELIMINATION. "This may serve to guard against “selfish” genomes that might otherwise infest and destroy the population, or even the species, with unregulated organelles. Again we encounter meiotic symmetry in that such “purging” functions are also a feature of meiosis.” https://lnkd.in/ebVhXPf View in LinkedIn

HAPLOID ORGANELLE SELECTION. "A second consequence of uniparental inheritance is that at each sexual generation, a uniform set of organelle genomes is exposed to natural selection in the “unmasked” haploid state, and a uniform set of organelle genomes is eliminated from the gene pool altogether." https://lnkd.in/ebVhXPf View in LinkedIn