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Class: The Demo Model (DEMOSPONGIAE)

Published on: 16th August, 2022

The basic idea behind the theory of evolution behind natural selection is this: if you get eaten or otherwise die before you’ve had the chance to reproduce then your genes, or traits, don’t get passed on. It’s a dead end. But if you survive… some of your traits get passed down to a new generation. Maybe you were just a bit faster than the other wildebeest. Maybe your coloration gave you better camouflage than some of the rest. Who knows? It could be a ton of things. The point is, over time, these little changes in the proportion of traits will add up to big changes, maybe even entirely new species!

 

There’s a misconception out there though related to this idea called Survival of the Fittest. That evolution works through the survival of the strongest, fastest, toughest, meanest of the bunch and that things get stronger, faster, tougher, and meaner over time. Thing is, that’s just not true. Problematic associations aside, that idea doesn’t explain the persistence of seemingly useless traits, or the loss of seemingly useful traits, or traits that simply don’t change for millions of years at a time. Sometimes, things persist simply because there’s no pressure for them not to. Sometimes, things just work.

 

In the case of sponges, there’s the Demo Model

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About the Podcast

The Wild Life
A show about the wonder and wildness of life, following the threads that connect us to the natural world.
An optimistic, curiosity-chasing show about the wonder and wildness of life, following the threads that connect us to the natural world. The Wild Life is, always has been, and always will be a show about the diversity of life within the animal kingdom, but it's about more than that. It's about connections. It's about how the natural world inspires our culture, movies, and technologies. It's about the patterns that persist throughout not just life, but the universe itself. It's about us.
The Wild Life is a place for the curious, the adventurous, the hopeful, and the hopeless to discover the natural world through unique perspectives. Between the blog and podcasts, The Wild Life seeks to bring the traditional naturalist experience into the 21st century by merging immersive storytelling and foley art with technology and creative experiences. It’s an exploration of truth, common ground, and shared places as we attempt to fill each episode with wonder, connectedness, intrigue, and humor.

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Devon Bowker