In this article, we'll take a closer look at Darwin's ideas. We'll trace how they emerged from his worldwide travels on the ship HMS Beagle, and we'll also walk through an example of how …

Natural selection is a mechanism of evolution and explains how species adapt to their environment over time through variations in traits. Examples include the peppered moth …

Discover how evolution remains an ongoing process, with natural selection and genetic variation driving adaptation. Compare evidence across scales to see how unity and diversity arise from …

Darwin's theory was based on the mechanism of natural selection, which explains how populations can evolve in such a way that they become better suited to their environments …

Explore the fascinating concept of natural selection, a key driver of evolution. Learn how advantageous traits increase survival and reproduction chances, leading to population …

Discover how evolution remains an ongoing process, with natural selection and genetic variation driving adaptation. Compare evidence across scales to see how unity and diversity arise from …

Discover the diversity of life on Earth and the forces that shape it! In this section, you can learn about evolution, natural selection, and the tree of life.

Unit 18: Evolution and the tree of life About this unit This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check …

The DNA is not sentient. It is not somehow constructing itself. And that's where natural selection comes into the picture. So let's imagine a population, and I'm gonna think about a very …

Natural selection is the impact of the natural environment on a population of organisms. Over a single or a few generations the effect is going to be small but the effect builds up over many …