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PERSISTENT STRATEGY. "Sex, once evolved, is a remarkably persistent evolutionary strategy – most eukaryotes reproduce sexually." https://lnkd.in/gGTTSzx View in LinkedIn

ONE WAY STREET. "An alternative explanation for the predominance of sex is that it is difficult for an organism to accomplish asexual reproduction once sexual reproduction has evolved. Difficulty in returning to asexuality could reflect developmental or genetic constraints." Although some organisms do vary between states. https://lnkd.in/gGTTSzx View in LinkedIn

OCCULT REASON. "Asexual reproduction could offer up to a two-fold fitness advantage over sexual reproduction, yet higher organisms usually reproduce sexually." https://lnkd.in/gGTTSzx View in LinkedIn

EVOLUTIONARY SIGNIFICANCE. "Mechanistic studies of meiosis have been carried out in different fields, such as cell biology, genetics and epigenetics, encompassing a wide range of eukaryotes. However, these studies rarely focus on the evolutionary significance of meiotic mechanisms, rather mentioning them in passing and often in a simplified manner." http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn

KEY TO MEIOSIS SUCCESS. "This genetic reshuffling reduces genetic associations within and between loci and is thought to be the basis of the success of sexual reproduction." https://lnkd.in/e2tp_G5 View in LinkedIn

HALVING AND REFRESHENING. "Meiosis reduces a cells chromosome number by half, whilst also creating new allele combinations distributed across daughter cells through segregation and recombination." http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn

THE CORE. “In eukaryotic sexual life cycles, haploid cells fuse to give rise to diploids, before diploid cells are converted back to haploids in a process known as meiosis. Meiosis reduces a cells chromosome number by half, whilst also creating new allele combinations distributed across daughter cells through segregation and recombination.” http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn

TWO STEPS. "In eukaryotic sexual life cycles, haploid cells fuse to give rise to diploids, before diploid cells are converted back to haploids in a process known as meiosis." http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn

OXIDATIVE STRESS HYPOTHESIS. "This scenario presupposes that DNA maintenance is inefficient in the absence of meiosis; however, prokaryotes (including archaea) have efficient repair mechanisms that involve recombination but not meiosis. In addition, this scenario does not fit well with the observation that a large number of DSBs are actively generated at the onset of meiosis." (DSB = double strand breaks). http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn

THE TOPIC BREADTH. "We discuss the origin of meiosis (origin of ploidy reduction and recombination, two-step meiosis), its secondary modifications (in polyploids or asexuals, inverted meiosis), its importance in punctuating life cycles (meiotic arrests, epigenetic resetting, meiotic asymmetry, meiotic fairness) and features associated with recombination (disjunction constraints, heterochiasmy, crossover interference and hotspots)." http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf View in LinkedIn