A 2019 paper in Nature Communications by Kaustubh Adhikari and a large team of researchers, “A GWAS in Latin Americans highlights the convergent evolution of lighter skin pigmentation in Eurasia,” presents a detailed genetic analysis of pigmentation traits in over 6,000 individuals. The authors conclude that the presence of different genetic variants for lighter skin in Europeans and East Asians represents a case of “convergent evolution,” where unguided natural processes independently arrived at the same adaptive solution in different populations over tens of thousands of years.
However, a critical examination of the study’s actual findings reveals that this evolutionary narrative is a philosophical gloss applied to data that spectacularly fails to support it. The paper does not provide evidence for the origin of new genetic information, a central requirement of molecules-to-man evolution. Instead, it powerfully documents the sorting and selection of pre-existing information, a process that is better explained by a biblical model of recent human origins, where humanity was created with a vast, pre-engineered genetic library to facilitate rapid adaptation after the dispersion from Babel.
A Fair Summary of the Research
The primary achievement of Adhikari et al. is a large-scale Genome-Wide Association Study (GWAS) on an admixed Latin American population. This population is genetically ideal for such a study, as it represents a mix of European, Native American, and African ancestries, ensuring a wide range of variation in the genes controlling pigmentation. The researchers meticulously measured skin, hair, and eye color and correlated these traits with millions of genetic markers (SNPs) across the genome.
Their direct findings are significant. They confirmed the role of several well-known pigmentation genes (SLC45A2, IRF4, HERC2/OCA2, SLC24A5) and also identified four novel genomic regions associated with these traits. The most compelling finding, central to their “convergent evolution” thesis, involves the gene MFSD12. They found that a specific missense variant (Y182H) in this gene is strongly associated with lighter skin and is common in East Asian and Native American populations, but rare elsewhere. They argue this variant was strongly selected for in East Asia as an adaptation to lower solar radiation, representing a separate evolutionary path to lighter skin from the one taken in Europe, which primarily involves variants in genes like SLC24A5.
The Core Critique: A Narrative in Search of Evidence
While the data collection is impressive, the evolutionary interpretation collapses under scrutiny for several fundamental reasons. The study demonstrates correlation, not causation for the origin of the genes themselves, and it relies on a falsified deep-time framework.
The Unexplained Origin of Information
The most glaring failure of the paper, as with all such studies, is that it does not even begin to address the central problem of biological origins: the source of the specified information required to build the molecular systems in the first place. The study discusses variants in MFSD12, SLC24A5, and OCA2, but it offers no explanation for how these complex genes—which encode sophisticated protein machines involved in the transport and synthesis of melanin—arose from non-coding DNA. The authors simply “assume a gene” and proceed from there. This is like finding two different types of spark plugs in Fords and Hondas and calling it “convergent evolution,” while completely ignoring the impossible, information-rich challenge of inventing the internal combustion engine itself. The origin of the functional, integrated melanin production and regulation system is the real evolutionary problem, and this paper makes no contribution to solving it.
The Timescale Contradiction
The entire “convergent evolution” story is predicated on a deep-time scenario where European and East Asian populations were separated for tens of thousands, if not hundreds of thousands, of years, allowing for independent evolutionary trajectories. This timeline is a foundational assumption of the evolutionary model, but it has been directly falsified by empirical, real-world science.
Modern genetic studies that measure the actual mutation rates in human pedigrees (i.e., from parent to child) show that our molecular clocks tick much faster than the evolutionary model requires. When these empirically-measured rates are used to calibrate the human family tree, they consistently point to a common ancestor for all humanity—”Mitochondrial Eve” and “Y-chromosome Adam”—living only about 6,000 years ago. The genetic variation we see today did not accumulate over eons; it arose in just the last few millennia, a timeline that fits the biblical account of a recent creation and a population bottleneck at the Flood. The paper’s narrative of ancient splits and slow selection is built on a foundation of falsified time.
“Selection” is Not Creation
The authors identify signals of “selection” acting on specific alleles, such as the Y182H variant in MFSD12. This is presented as evolution in action. However, this is a profound misrepresentation of the process. Natural selection is a culling force; it can favor one pre-existing trait over another, causing a change in allele frequency within a population. It cannot create new genes or new functional systems.
A missense variant, which changes one amino acid for another in a protein, is a trivial modification of a pre-existing, information-rich structure. It is not the generation of novelty. In fact, following biochemist Michael Behe’s “First Rule of Adaptive Evolution,” the fastest way for an organism to adapt is often to break or blunt the function of an existing gene. It is plausible that modifying the MFSD12 protein’s function (or even slightly damaging it) could reduce melanin production, providing a selective advantage in low-UV environments where Vitamin D synthesis is critical. This is not creative evolution; it is, at best, adaptive degeneration. The mechanism hailed as the engine of evolution is, in reality, a process of tinkering and breaking, leading inevitably to a net loss of information over time—a process of genetic entropy.
The Better Explanation: A Designed Genetic Toolkit
The evidence presented by Adhikari et al., when stripped of its evolutionary narrative, fits perfectly within a biblical creation model. The data doesn’t point to unguided convergence, but to engineered divergence from a common source.
Created Heterozygosity and the Dispersion at Babel
The biblical account in Genesis states that God created the first humans, Adam and Eve, and that all humanity descended from Noah’s family after a global Flood. A robust scientific model based on this history proposes that God front-loaded the original human genome with vast genetic potential in the form of designed heterozygosity. This means Adam and Eve were created with multiple alleles for key genes, including those for pigmentation. This pre-existing library of variants was not a product of chance mutation but a feature of brilliant engineering, designed to allow their descendants to adapt and thrive in diverse environments across the globe.
After the dispersion from the Tower of Babel, small, isolated family groups migrated away from the Middle East. Each group carried only a subset of the total genetic information present in the parent population. Through the straightforward genetic mechanisms of recombination, genetic drift, and natural selection acting on this created variation, new, fixed traits would appear very rapidly—in a matter of generations, not tens of thousands of years.
This model provides a far more powerful explanation for the paper’s findings:
- Distinct Markers: Groups migrating north into Europe experienced environmental pressures that favored variants in genes like
SLC24A5, leading to lighter skin. - “Convergent” Traits: Groups migrating east and eventually into the Americas faced similar pressures (low UV) at northern latitudes, which favored a different pre-existing variant in the
MFSD12gene to achieve a similar result.
This is not “convergent evolution.” It is the intelligent deployment of different, pre-programmed solutions from a master genetic toolkit to solve the same environmental challenge. The pattern of different genes for the same trait in different populations is precisely what a model of created diversity and rapid post-Babel diversification would predict.
Conclusion
Adhikari et al. have produced a valuable dataset that maps the genetic architecture of human pigmentation. Yet, they have interpreted their findings through a philosophical lens that the data itself cannot support. The study provides zero evidence for the origin of the genes required for pigmentation and relies on a deep-time evolutionary timescale that has been refuted by empirical molecular clock data.
When the evidence is analyzed using a rigorous historical scientific method, which compares the known causal powers of intelligence versus unguided processes, a different conclusion emerges. The genetic variants for skin color are not the products of blind, random mutation. They are the fingerprints of a Creator. The pattern of human diversity is not a story of slow, convergent evolution from an ape-like ancestor, but a testament to the foresight of a masterful Engineer who equipped humanity with the designed potential to rapidly fill the earth, adapting to new environments and displaying the glorious spectrum of variation we see today.
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