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NORMAL WITH EXCEPTIONS, of course. "Although meiosis is highly conserved in eukaryotes, deviations from the norm are ubiquitous and may provide important insights into its evolution." https://lnkd.in/e2tp_G5 View in LinkedIn

NEO-DARWINISM AND THE SELFISH GENE take a knock with this lecture by Professor Denis Nobel. https://lnkd.in/eUunJpa View in LinkedIn

"A RECURRENT THEME in most meiosis mysteries is the impact of genetic conflicts and selfish genetic elements. As for many genomic features, their impact is probably central, but in many cases, they remain hypothetical and difficult to study directly." https://lnkd.in/e2tp_G5 View in LinkedIn

RED QUEEN HYPOTHESIS. “More recently, an additional hypothesis has been advanced that sex might enable organisms to escape or outrun pathogens. This is termed the Red Queen hypothesis, which is an allusion to Lewis Carroll’s novel Through the Looking Glass in which the character the Red Queen must run as fast as she can just to stay in the same place, and in the evolutionary analogy sexual reproduction enables organisms to just keep ahead in the co-evolutionary race with the pathogens that afflict them.” https://lnkd.in/etNBEYs View in LinkedIn

“ASEXUAL REPRODUCTION is more efficient than sexual reproduction because sexual reproduction has 50% males who cannot produce offspring themselves. Why do males exist?” https://lnkd.in/e3_feD9 View in LinkedIn

ADVANTAGES OF SEXUAL REPRODUCTION. “The variation that sexual reproduction creates among offspring is very important to the survival and reproduction of the population. In sexual reproduction, different mutations are continually reshuffled from one generation to the next when different parents combine their unique genomes; this results in an increase of genetic diversity. On average, a sexually-reproducing population will leave more offspring than an otherwise similar asexually-reproducing population.” https://lnkd.in/exK5mn7 View in LinkedIn

TWO FAULT TOLERANCE. "Recombination supplies two fault-tolerance mechanisms at the molecular level: recombinational DNA repair (promoted during meiosis because homologous chromosomes pair at that time) and complementation (also known as heterosis, hybrid vigor or masking of mutations)." https://en.m.wikipedia.org/wiki/Evolution_of_sexual_reproduction#Two-fold_cost_of_sex View in LinkedIn

Plastic bags charge set to be extended to small shops View in LinkedIn

A marine biologist says a humpback whale saved her from a shark View in LinkedIn

GENETIC FRESHNESS. "Sexual reproduction must offer significant fitness advantages to a species because despite the two-fold cost of sex, it dominates among multicellular forms of life, implying that the fitness of offspring produced outweighs the costs. Sexual reproduction derives from recombination, where parent genotypes are reorganized and shared with the offspring. This stands in contrast to single-parent asexual replication, where the offspring is identical to the parents. https://en.m.wikipedia.org/wiki/Evolution_of_sexual_reproduction#Two-fold_cost_of_sex View in LinkedIn