Wallace Contribution to Theory of Evolution

When we talk about the theory of evolution, the name that comes to mind is Charles Darwin. However, another scientist made important contributions to this field that often go overlooked – Alfred Russel Wallace.

Who was Alfred Russel Wallace?

Alfred Russel Wallace was a British naturalist and explorer who lived from 1823 to 1913. He is best known for independently conceiving the theory of evolution through natural selection around the same time as Charles Darwin.

What is Natural Selection?

Natural selection is a process by which organisms better adapted to their environment tend to survive and produce more offspring. This theory suggests that over time, species evolve and change in response to their environment.

Wallace’s Contributions

In 1858, Wallace wrote a paper titled “On the Tendency of Varieties to Depart Indefinitely from the Original Type,” in which he outlined his ideas on natural selection. This paper was sent to Charles Darwin, who had been working on similar ideas for over twenty years but had not yet published his findings. Darwin was shocked to find someone else with similar ideas and quickly published his own work on natural selection along with Wallace’s paper.

Despite being overshadowed by Darwin in history books, Wallace’s contributions were crucial in shaping our understanding of evolution. In fact, some scientists believe that Wallace’s paper may have even pushed Darwin towards finally publishing his own findings on the subject.

The Importance of Wallace’s Work

Wallace’s contribution to the theory of evolution cannot be overstated. His work helped establish natural selection as a key mechanism driving evolution and advanced our understanding of how species adapt and change over time. His commitment to science led him on many adventures, including a trip to the Amazon and a journey to Southeast Asia, where he discovered thousands of new species.

Wallace was also a strong advocate for social justice and believed in using science to make the world a better place. He was an early proponent of environmentalism and conservation, and his ideas continue to inspire scientists and conservationists today.


While Charles Darwin is often credited as the father of evolution, it’s important to remember that Alfred Russel Wallace made equally important contributions to this field. His work on natural selection helped shape our understanding of how species evolve and change over time and advanced our knowledge of the natural world. We owe a debt of gratitude to Wallace for his tireless work in advancing science.