What Darwin Didn't Know: The Modern Science of Evolution Season 1 Episode 7 Rapid Evolution within Species

In this episode of What Darwin Didn't Know: The Modern Science of Evolution, titled "Rapid Evolution within Species," the focus is on the concept of microevolution – the changes that occur within a species over short periods of time.

The episode begins by tracing the history of the study of microevolution, starting with the work of Gregor Mendel and his discovery of genetics in the 19th century, and moving through the early 20th century, when biologists began to observe and document rapid changes in the physical and behavioral traits of organisms.

Through a series of case studies, the show explores how and why these rapid changes occur, from the breeding habits of fruit flies to the impact of pollution on fish populations. Viewers will learn about the mechanisms of evolution that allow these changes to take place, including natural selection, gene flow, mutation, and genetic drift.

One of the key takeaways from the episode is the idea that microevolution is a rapid and ongoing process, occurring on a much faster timescale than the macroevolution that Darwin first documented in his theory of evolution by natural selection. Through interviews with leading scientists in the field, viewers will gain a deeper understanding of this process and its implications for the future of life on Earth.

Overall, "Rapid Evolution within Species" is a fascinating exploration of the dynamic and exciting world of microevolution, and a reminder that the mechanisms of evolution are constantly at work shaping the world around us.