Unveiling God's Molecular Limits: Embracing Natural Variation in Christian Faith

Molecular Limits to Natural Variation

The theory of natural selection proposed by Charles Darwin is correct in principle but has some limitations when applied to the diversity of life on Earth. While species do originate through the selection of natural variation, this process is not unlimited or entirely naturalistic. Rather, it is guided by an intelligently designed system that allows for the switching on and off of different combinations of built-in components.

The facilitated variation theory, proposed by Kirschner and Gerhart, offers a better explanation of how life works. According to this theory, life was created with the built-in ability to vary and adapt to changing conditions. However, the potential for variation is limited to the rearrangement of existing regulatory components and cannot create new components that do not already exist.

When applied to the grass family, facilitated variation theory can account for the diversification of the entire family from a common ancestor. This aligns with the idea proposed by baraminologists, who study created kinds and have identified groups within the grass family that share a common ancestry. However, this theory cannot be extended to include all flowering plants, as there are significant differences between grasses and other angiosperms.

The potential for diversification in the post-Flood era must have been vast in order to rapidly repopulate the Earth and restore ecological balances. Facilitated variation theory provides a plausible explanation for this rapid differentiation and dispersal. However, due to genome depletion through selection and degradation through mutation, the potential for diversification that we see in species today is relatively trivial.

It is important to note that Darwin made several errors in his theory. First, he proposed a purely naturalistic mechanism for evolution when we now know that it must be intelligently designed. Second, he extrapolated his mechanism to all forms of life, which we now understand is not possible. Third, he believed that selection worked on every tiny advantageous variation, leading to continual improvement. However, we now know that selective advantages of less than 10% have little chance of gaining fixation. Finally, he proposed that reproductive success was the primary driving force behind species diversification, but this is not generally true.

In conclusion, the theory of natural selection must be understood in light of the limits to natural variation. While there is potential for variation within the regulatory and signaling systems of organisms, the scope for change is limited. The rapid diversification seen in the grass family and other flowering plants suggests that this process occurred rapidly in the past, likely after the Flood. By understanding these limits to natural variation, we gain a more accurate understanding of the origins and diversity of life on Earth.

Why This Matters

Understanding the limits to natural variation helps us appreciate the complexity and design of life. It challenges the purely naturalistic view of evolution and highlights the need for an intelligent designer. Recognizing these limits also has implications for our understanding of biodiversity and the history of life on Earth.

Think About It

How does the idea of limited natural variation challenge traditional evolutionary theory? How does it align with an understanding of an intelligent designer? Consider how this perspective might shape your view of nature and its origins.