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SYNGAMIC FUSION. "The counterpart of meiosis, the syngamic fusion of haploid cells to form diploids may have been advantageous to survive famine as well as providing greater resistance to the highly mutagenic environment that existed 1 Gy ago." https://lnkd.in/d8Qr_bk View in LinkedIn

ANCIENT GENOME EDITING. "What were the disadvantages of circular chromosomes that could have ensured the supremacy of an incipient eukaryote with linear chromosomes? It has been suggested that the answer lies in the first division of meiosis. Meiosis may have first evolved as a mechanism to correct polyploidy arising from genome segregation mistakes." https://lnkd.in/d8Qr_bk View in LinkedIn

SUCCESSFUL CIRCULAR DESIGN. "Before the linear chromosomes of eukaryotes emerged ∼1 Gy ago, circular chromosomes had been successfully used for 2 Gy and they continue to predominate in the most common organisms on this planet (eubacteria and archaea)." https://lnkd.in/d8Qr_bk View in LinkedIn

WHY CIRCULAR CHROMOSOMES? "Meiosis entails chromosome segregation, and thus it is important to consider the nature of the chromosomes involved given that most modern prokaryotes have circular genomes." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

EDITING EPIGENETICS. "Assuming some epigenetic defects are nevertheless transmitted to the next generation, sexual reproduction and outbreeding would be advantageous because they provide the opportunity for their removal at the next meiosis. Inbreeding would be disadvantageous, because it increases the probability that epigenetic defects would become homozygous and could no longer be removed by recombination." https://lnkd.in/dx9WaSq View in LinkedIn

NECESSITY FOR NUCLEUS. "The invasion of Group II introns may have also led to nonsense-mediated decay as a way to remove intron-bearing transcripts from ribosomes but generation of a nuclear envelope combined with a system that links mRNA transport to the completion of splicing is a more definitive solution." https://lnkd.in/d8Qr_bk View in LinkedIn

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RISE OF POLYPLOIDY. "The evolution of meiosis resulted in homolog chromosome pairing, independent assortment, chiasmata-based crossing over, and ploidy changes (2N to 4N to 2N to 1N)." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

PLAGUE REMOVAL. "The insertion of Group II introns into coding regions could have provided the selective pressure for the invention of the nucleus as a compartment where introns can be removed from pre-mRNAs before they are used by ribosome." https://lnkd.in/d8Qr_bk View in LinkedIn