Genetic Drift

FromEvolution Talk

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Genetic Drift

FromEvolution Talk

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Length:

13 minutes

Released:

May 18, 2015

Format:

Podcast episode

Description

Frog populations remained pretty much the same in Podville until the Great Fire of 2015. After the fire the population of blue frogs increased. Welcome to genetic drift, the subject of this week's episode of 'Evolution Talk'.

Released:

May 18, 2015

Format:

Podcast episode

Titles in the series (100)

Everything you wanted to know about evolution by natural selection in short, easy to digest, episodes. Hosted, and produced by writer Rick Coste.

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Only A Theory: Charles Darwin had a hypothesis was that animals evolved due to a process he called natural selection. He strengthened his hypothesis with tests and observation. Evolution by natural selection has held up to every test. It is because of this that it... by Evolution Talk
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The Beginning: Multicellularity Rules: The reason natural selection had such a grand old-time with multicellular organisms is because it gave it something to select for. These organisms increased in size, moved into new areas for food, and protected themselves against the environment. It... by Evolution Talk
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The Beginning: Sexual Reproduction: One day, millions of years ago, something occurred between two unsuspecting eukaryotes. When they bumped into one another something magical happened. They both left that encounter slightly different than they had been before. What passed from one to... by Evolution Talk
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The Father of Zoology: Aristotle actually came close to explaining natural selection, 2200 years before Charles Darwin and Alfred Russel Wallace did. by Evolution Talk
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Robert Chambers: Robert Chambers' masterpiece was titled 'Vestiges of the Natural History of Creation'. In it he explained how everything evolved. Everything from simple, less complex forms, to more complex forms over time. by Evolution Talk
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The Beginning: Life: In the beginning the Earth wasn’t exactly a hospitable place. It was hot, volcanic, and oxygen was a rare commodity. So the question now is how did life emerge from these conditions? We are still asking this 4.6 billion years later. Darwin proposed... by Evolution Talk
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Altruism: Where does altruism come from? How did it evolve in a world ruled by 'selfish genes'? by Evolution Talk
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The Beginning: Out of the Sea: The sea was full of life a half a billion years ago. Arthropods fought to survive and there were some interesting things happening on land as well. We have here our first plants - and they spread like wildfire. The quiet life on land enjoyed by the... by Evolution Talk
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Putting the Selection in Sex: For Charles Darwin, the idea of sexual selection explained a lot of what he saw in the animal kingdom. He gave sexual selection just as much importance as natural selection. by Evolution Talk
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Of Mermaids and Men: Benoit de Maillet believed that life, all life, came from the sea. And not only did it come from the sea, but it continued to evolve into different species as it encountered different environments. To present these ideas would be dangerous to him so... by Evolution Talk
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Darwin or Design: As a young man, the more Charles Darwin learned about nature the more he began to question things. If species were immutable, meaning they never changed, then how was it that breeders were able to change the forms of dogs or pigeons? What if something... by Evolution Talk
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The Beginning: Cyanobacteria: 3.5 billion years ago microbial organisms appeared on the earth. These organisms combined, split, and combined some more, until the formation of microbes and single-celled algae. One of these single-celled algae-like organisms were cyanobacteria. by Evolution Talk
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Warm Blooded Dinosaurs: In 1986 Professor Robert Bakker, a paleontologist, published 'The Dinosaur Heresies'. According to Professor Bakker there have been waves of extinction, and these extinction events mainly attacked, or affected, one particular type of animal... warm... by Evolution Talk
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Erasmus Darwin: Erasmus was a country physician. He believed that women should have access to the same education that men did, and that slavery should be abolished. He also believed that life evolved from a single filament that wiggled out of the mud in the distant past. by Evolution Talk
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Genetic Drift

Genetic Drift

Description

Titles in the series (100)

More Episodes from Evolution Talk