21Sep 2022 by Nigel Fleming No Comments

linkedin post 2020-06-13 04:55:13

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GENESIS. "These and other criteria support the generally held view that each algal lineage traces its ancestry back to a unicellular ancestral organism, that colonial and multi-cellular life forms have evolved independently many times, that the land plants (embryophytes) and the charophycean algae share a last common ancestor, and that the embryophytes are a monophyletic group." http://aob.oxfordjournals.org/content/85/4/411.full.pdf View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments
linkedin post 2020-06-13 04:52:09

linkedin post 2020-06-13 04:52:09

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FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on the theme of the evolution of plant body plans, which necessarily also considers plant developmental systems in true evo-devo style (evolution-development). Far from being arcane and abstract, this topic highlights the most useful aphorism in biology, that “nothing in biology makes sense except in the light of evolution.” (Theodosus Dobzansky, adapted from the Jesuit priest, Teilhard de Chardin). https://en.m.wikipedia.org/wiki/Nothing_in_Biology_Makes_Sense_Except_in_the_Light_of_Evolution View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2020-06-12 01:11:41

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EFFECT ON GENES. “Various animals (bacteria, bees, fishes, birds, etc.) show the ability to find orientation in the geomagnetic field. This magnetoreception effect can be explained by the presence of small biogenic magnetite crystals in their organisms that interact with the geomagnetic field. Some studies carried out on rodents show that they respond to magnetic stimulation in the earth's magnetic field by the expression of activity genes like C-fos, but the mechanism of magnetoreception for them it is still unknown.” https://lnkd.in/egqBGFN View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2020-06-12 01:08:37

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“MAGNETITE, a ferrimagnetic oxide of iron is synthesized in the nanocrystalline form by many living organisms. Magnetotactic bacteria and iron reducing bacteria are naturally known to precipitate magnetite nanocrystals. Besides bacteria, unicellular algae- Euglena, dinoflagellates, as well as higher animals such as salmon, butterfly, army ants, pigeons, and even human brain mineralize magnetite nanoparticles.” https://lnkd.in/es5DATt View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2020-06-12 01:06:53

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EARTH MAGNET. “The Earth generates its own magnetic field (the geomagnetic field), which is mostly caused by electric currents in the liquid outer core of the Earth (the “dynamo effect”). The magnetic field measured at the Earth’s surface is similar to the magnetic field one would expect to see if a large dipole magnet was placed in the center of the Earth.” https://scholar.google.es/scholar?hl=en&as_sdt=0,5&as_ylo=2015&q=magnetoreception View in LinkedIn
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