What Does Darwin’s Theory of Evolution Not Explain?


Diego Sanchez

Darwin’s Theory of Evolution is a fundamental concept in biology that explains how species evolve and change over time. However, there are certain things that the theory doesn’t explain.

What Darwin’s Theory of Evolution Does Explain

Before we dive into what the theory doesn’t explain, let’s first understand what it does explain. Darwin’s theory of evolution explains how species adapt and change over time through natural selection.

It suggests that organisms with advantageous traits will survive and reproduce more effectively than those without these traits. Over time, this leads to the evolution of new species.

What Darwin’s Theory of Evolution Doesn’t Explain

While Darwin’s theory of evolution is incredibly powerful, there are certain things that it doesn’t account for. Here are some examples:

1. The Origin of Life

One thing that Darwin’s theory doesn’t explain is how life originated in the first place. While we understand how life has evolved and diversified since its origin, we don’t yet know how it came to be in the first place.

2. The Mechanisms Behind Inheritance

While Darwin understood that traits could be passed down from parents to offspring, he didn’t actually know how this process worked at a molecular level. It wasn’t until much later that scientists discovered DNA and began to understand the mechanisms behind inheritance.

3. The Role of Chance Events

While natural selection plays a significant role in shaping evolution, chance events can also have a big impact on which traits become dominant in a population. For example, genetic drift can cause certain traits to become more or less common purely by chance.

4. The Evolutionary History of Every Species

While we can use evolutionary theory to make predictions about how species have evolved over time, it’s impossible to know every detail about the history of every species. We can make educated guesses based on the available evidence, but there will always be some gaps in our understanding.


While Darwin’s theory of evolution is a powerful tool for understanding how species change and evolve over time, it doesn’t explain everything. There are still many unanswered questions in biology, and scientists continue to work to fill in the gaps in our knowledge. By continuing to study evolution and its mechanisms, we can gain a deeper understanding of the natural world around us.