Sean Carrol "The Big Picture - On the Origins of Life, Meaning and the Universe Itself"
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Channel: thegoodatheist
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Keywords: logicalla, logical-la, skeptic, science, scientific skeptic, skepticism, bruce gleason, backyard, skeptics, atheism, sean carroll
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Length: 66min 35sec (3995 seconds)
Published: Wed Jan 25 2017
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The ekinological framework explains many features of evolution. Novel biochemical pathways emerge simply to adapt to selective pressures. Antibiotics, restriction enzymes, CRISPR/Cas, and even splicing machinery are cases where organisms dealt with stressful situations at the time. They aren't moving "toward" anything, they are moving "away" from their selective pressures.
In this example, splicing machinery is used to adapt to rampant DNA transposon activity. http://www.nature.com/nature/journal/v538/n7626/abs/nature20110.html