Episode 33 - Ontogeny

The Common Descent Podcast

Common Descent

Science, Natural Sciences, Education, Earth Sciences, Science:natural Sciences

4.8 • 764 Ratings

🗓️ 22 April 2018

⏱️ 105 minutes

🔗️ Recording | iTunes | RSS

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Summary

Animals don’t start their lives as tiny copies of adults; there are all sorts of changes that a creature goes through from fertilization to birth and from newborn to mature. This development is called ontogeny. In this episode, we discuss how ontogenetic change impacts animals as they grow, what we can learn from these patterns, and how ontogeny can cause confusion in the fossil record. In the news: colorful moth fossils, an enormous ichthyosaur, Neanderthals' strange faces, and sea turtle navigation. Time markers: Intro & Announcements: 00:00:00News: 00:05:00Main discussion, Part 1: 00:30:30Main discussion, Part 2: 01:08:30 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Follow and Support us on: Patreon: https://www.patreon.com/commondescentpodcast Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcast/PodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org. Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/

Transcript

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0:00.0	You're listening to the Common Descent Podcast.
0:19.0	Hello, David. Hello, Will. And hello, David.
0:21.9	Hello, Will.
0:23.8	And hello, listeners.
0:25.2	Greetings.
0:29.6	Welcome to episode 33 of the Common Descent Podcast.
0:31.0	Welcome back.
0:32.1	Thanks for joining us. Today, we have an episode on ontogeny throughout,
0:37.6	yes, ontogeny throughout... What? Yes.
0:38.6	Ontogeny and ontogynes throughout the fossil record.
0:42.0	What is that big word?
0:43.6	Well, I'm glad you asked, David.
0:45.8	Ontogeny is the subject of a organism's change throughout its life history.
0:53.2	From young to old. Yes.
0:55.0	So how it develops, how it changes, how, and it's a interesting topic because there's a lot of
1:02.0	researchers that use it, but it itself is just a process that can be observed in many different
1:08.0	ways.
1:09.0	So it is the process of an organism changing throughout its life,
1:14.6	including from the very beginning to the very end. So yeah, we're going to talk about examples of it,
1:21.0	you know, to give you an idea of what the actual science is, to give you examples of how it's
1:26.6	used and what it teaches us. But then we have
1:28.8	some very interesting examples of how it is observed in the fossil record and some really
	...

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