Exaptation vs Front Loading: Why Evolution Wins

There’s a very interesting post on the Newsweek blog by science journalist Sharon Begley about the existence of genes for synapses in the sea sponge, which has no need for such structures. Begley is discussing an article in PLoS One that found that the same genes that code for synapses are present in sea sponges, one of the most primitive multicellular organisms on the planet, which have no nervous system and therefore no need for synapses.

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