Why Mutation and Natural Selection Can’t Produce New Species

Evolution, at its core, hinges upon a two-part engine: random genetic mutations and the process of natural selection. The theory asserts that random changes in an organism’s DNA occasionally produce beneficial traits, and natural selection preserves and accumulates these traits over successive generations. Over vast stretches of time this is believed to lead to the emergence of new physical characteristics and entirely new species. However, this supposed two-part mechanism faces a profound dilemma. Far from being an effective process for engineering the diversity and complexity of life, it is grossly inadequate and scientifically implausible. Even many secular scientists, when pressed, concede that the mechanisms proposed by neo-Darwinism fall short of explaining the origin and diversity of life. This article will examine why.

1. The Myth of Beneficial Mutation

Let’s begin with the engine’s fuel: random genetic mutations. The theory of evolution requires these mutations to be the creative force behind the rise of all biological novelty. New features—such as feathers, wings, the human eye, and the brain—must all be ultimately traceable to random copying errors in DNA. But herein lies the first fatal flaw: mutations are overwhelmingly harmful or neutral.

According to evolutionary biologist Pierre-Paul Grassé, “No matter how numerous they may be, mutations do not produce any kind of evolution.”¹ While mutations may occasionally alter existing traits or break down existing systems (often resulting in disease or deformity), they do not create the kind of ordered, functional complexity required to produce new biological structures. The typical result of a mutation is either a loss of information or a degradation of function—not the creation of new genes or organs.

Dr. Lee Spetner, an information theorist and physicist, makes this point powerfully:

“All the mutations examined on the molecular level turn out to reduce the genetic information and not to increase it.”²

Michael Behe, a biochemist at Lehigh University, summarises it this way:

“The most recent findings of evolutionary biology are showing that Darwin’s mechanism works primarily by squashing or degrading genetic information. It doesn’t build new things—it tears things down.”³

Behe’s 2019 book Darwin Devolves details numerous studies showing that the most successful adaptations observed in laboratory settings are the result of deactivating existing genes—not creating new ones. The supposed engine of upward progress is, in reality, a mechanism of degenerative loss.

To be clear, for evolution to work as advertised, mutations would have to consistently add new functional information to the genome. Mutations must not merely shuffle existing genes or degrade them, but increase them in meaningful, constructive ways. But this has never been observed.

Some defenders of evolution point to so-called “beneficial mutations,” such as bacterial resistance to antibiotics or the sickle cell trait which confers partial immunity to malaria. But such examples do not support evolution—they reveal its limits. Bacterial resistance often results from the loss of a genetic function (e.g., a mutation that disables the mechanism by which antibiotics are absorbed), not the gaining of a new one. Sickle cell anaemia results from a point mutation that distorts red blood cells; the fact that this deformity provides limited protection against malaria does not mean it is an example of evolutionary progress. It is an example of a trade-off at great biological cost.

2. Natural Selection: A Conservative, Not Creative, Process

If random mutations are supposedly the engine’s fuel, natural selection is the steering wheel. According to evolutionary theory, natural selection (incorporating the processes of genetic drift and gene flow) operates by preserving beneficial mutations and eliminating harmful ones, thereby guiding the species toward greater adaptation and complexity over time.

But there is a serious problem here: natural selection doesn’t act until something meaningful and useful already exists. Natural selection favours organisms which have a newly developed trait that is beneficial for survival over organisms that don’t. But until a new trait or physical characteristic is fully developed, natural selection would not favour them. Organisms that have a partially developed, non-functional characteristic would have no evolutionary advantage – no functional benefit for survival – and would not be favoured by natural selection. Indeed, at the macro level of novel physical features, organisms with only partially developed new characteristics would be at a distinct disadvantage, rendering them less likely to survive and replicate.

At the micro level of genetics this problem is even more severe. The development of new physical features requires that many millions of pieces of new genetic information be added to the genome incrementally and sequentially – presumably over a long period of time. But not only are random genetic mutations unable to produce such sequential new information, natural selection has no reason to preserve these incremental steps because they convey no survival or functional benefit in their partial state of development. The process of natural selection simply would not save and perpetuate these many millions of incremental steps, it would only preserve meaningful information and novel features once they were fully developed and functionally advantageous.

As the prominent evolutionist Hugo de Vries acknowledged over a century ago, “Natural selection may explain the survival of the fittest, but it cannot explain the arrival of the fittest.”

3. The Problem of Irreducible Complexity

Perhaps the most striking evidence against the sufficiency of natural selection and mutation is the existence of irreducibly complex systems in living organisms. These are biological systems composed of multiple interdependent parts, all of which are necessary for the system to function. If even one part is missing or altered, the entire system fails.

Michael Behe popularized this concept with the analogy of a mousetrap. A mousetrap consists of several parts: the base, spring, hammer, catch, and holding bar. Remove any one part, and the trap does not work. Similarly, many biological structures (such as the bacterial flagellum, the blood-clotting cascade, and the vertebrate eye) exhibit this kind of interdependent complexity. All parts must be present and fully formed for the whole system to function.

Natural selection, however, can only preserve features that confer a present functional advantage. It cannot “look ahead” and retain useless or incomplete components in anticipation of a future function. Thus, it cannot build an irreducibly complex system piece by piece. Every part must be present simultaneously and in the correct configuration for the system to work. This presents a profound challenge to the evolutionary model.

As Behe writes:

“An irreducibly complex system cannot be produced directly by numerous, successive, slight modifications of a precursor system, because any precursor to an irreducibly complex system that is missing a part is by definition nonfunctional.”⁴

Evolution has no foresight. It cannot work toward a goal. Yet the existence of complex, integrated biological systems implies exactly this type of foresight; a purposeful design that is clearly the product of intelligence.

4. The Information Problem

Another devastating flaw in the proposed dual mechanism of evolution is the origin of genetic information. DNA is not merely a molecule—it is a carrier of complex, specified information, akin to a digital code. Every cell contains millions of instructions—precise sequences of nucleotides that direct the assembly of proteins and the regulation of cellular processes.

But where did this information come from? Random mutations do not explain the origin of the language-like structure of the genetic code. Information science teaches us that meaningful information does not arise by chance—it is always the product of intelligence. As Werner Gitt, a German information scientist, observes:

“There is no known law of nature, no known process, and no known sequence of events which can cause information to originate by itself in matter.”⁵

Evolution requires not just the origin of matter, but the origin of information. A new organ requires new proteins. New proteins require new genes. And new genes require new information—information that random copying errors cannot supply. In fact, random mutation would be more likely to corrupt or destroy meaningful information than to create it.

For example, the 3.2 billion pieces of specific information in the human genome arranged in precisely the right order to convey meaningful biological instructions could never have been generated by the random processes of successive genetic mutations. Even allowing for the billions of years that evolutionists claim, there is no plausible means that could account for the creation of even the simplest and shortest gene over that period of time. Intelligence simply can’t come from non-intelligence.

This brings us to a profound conclusion: The very existence of DNA points not to unguided evolution, but to an intelligent Creator.

5. The Waiting Time Problem

   

In recent years, population geneticists have begun to quantify the waiting time required for evolution to produce even small genetic changes. The results have been devastating to the evolutionary narrative.

Dr. John Sanford, a geneticist and former evolutionary biologist at Cornell University, has written extensively on this subject. His research shows that the time required for even a single beneficial mutation to become fixed in a population (i.e., spread to the entire gene pool) is far greater than the time available in the evolutionary timeline.

In one study, Sanford and his colleagues modelled the probability of two specific mutations arising and becoming fixed in a human population of 10 million. The result? It would take more than 84 million years—just for two coordinated mutations. Multiply this by the millions or even billions of mutations that would be needed to build a new organ or system, and the time required quickly becomes astronomical to the point of absurdity.

“The waiting time problem exposes a fatal flaw in evolutionary theory—it shows that evolution is not merely unlikely, but virtually impossible.”⁶

Evolution is running out of time—literally.

6. Theological Reflections: Order Requires a Mind

Scripture affirms what science increasingly reveals: order, purpose, and complexity are not the products of chaos. They point us toward a Designer.

Romans 1:20 declares, “For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse.” The intricate mechanisms of life—from the tiny motor of the bacterial flagellum to the interdependent systems of the human body—declare the glory of God.

Psalm 139:14 echoes this sentiment: “I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.”

Far from confirming the atheistic narrative of unguided evolution, biology bears the unmistakable fingerprint of divine intention. The failure of evolution’s mechanism is not merely a scientific problem—it is a theological truth. Life is not an accident. It is the product of wisdom and design.

Conclusion: The Engine That Doesn’t Work

Evolution claims to be powered by the twin engines of mutation and natural selection. But both have proven incapable of delivering what the theory demands. Mutations degrade rather than create and natural selection doesn’t preserve partially evolved, non-advantageous traits. Together, they fail to explain the arrival of complex structures, the origin of genetic information, or the rise of irreducibly complex systems.

As we’ve seen, even many secular scientists are quietly acknowledging the insufficiency of this supposed Darwinian mechanism. The creative power of evolution has always been more assumed than demonstrated. The emperor has no clothes.

In place of blind chance and unguided processes, the Bible offers a more rational, elegant and profoundly satisfying explanation: “In the beginning, God created the heavens and the earth … And let us create mankind in our image” (Genesis 1:1, 26).

Footnotes

1. Pierre-Paul Grassé, Evolution of Living Organisms (Academic Press, 1977), p. 88. ↩
2. Lee Spetner, Not by Chance! (The Judaica Press, 1997), p. 131. ↩
3. Michael Behe, Darwin Devolves (HarperOne, 2019). ↩
4. Michael Behe, Darwin’s Black Box (Free Press, 1996), p. 39. ↩
5. Werner Gitt, In the Beginning Was Information (CLV, 2001), p. 106. ↩
6. Sanford, John C. et al., “The Waiting Time Problem in a Model Human Population,” Theoretical Biology and Medical Modelling (2015). ↩