TikTok Explains Evolution: How Lactase Persistence Shows Adaptation in Action

In a recent TikTok video by science educator Zeke Darwin (@zekedarwinscience), the fascinating story of lactase persistence in humans is explained. Darwin uses the concept of lactase persistence, the ability to digest milk into adulthood, to illustrate the interplay between random mutations, environmental pressures, and evolutionary adaptation. He explains that while mutations themselves are random, their impact on an organism's survival and reproduction is shaped by the environment. In populations where dairy was a significant food source, individuals with lactase persistence had a clear advantage, leading to the increased frequency of this trait over time. This process, Darwin explains, is a prime example of evolution by natural selection. The video's clarity and engaging style make it an excellent resource for educating the public about the complexities of evolutionary biology. Darwin's explanation is backed by scientific research and makes the topic accessible to a broad audience.