Giraffes, with their beautifully elongated necks, have only seven cervical vertebrae. So do you, and, for that matter, most mammals. (Sloths and manatees are among the few oddballs that differ.) Short or long, mammal necks are typically supported by just seven bones. But other creatures played by different anatomical rules. The fantastic sauropod dinosaurs – such […]
Archive for August 11th, 2012
Populations Survive Despite Many Deleterious Mutations: Evolutionary Model of Muller’s Ratchet Explored
August 11th, 2012 
Riffin From protozoans to mammals, evolution has created more and more complex structures and better-adapted organisms. This is all the more astonishing as most genetic mutations are deleterious. Especially in small asexual populations that do not recombine their genes, unfavourable mutations can accumulate. This process is known as Muller’s ratchet in evolutionary biology. The ratchet, proposed […]
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Tags: Equilibrium of mutation, Riffin T Sajeev, Russel T Sajeev, WFS, world fossil society 
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