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Junk DNA

Scientists originally applied the term “junk DNA” to any section of DNA that appeared non-functional. Through advances in genomics, the definition has shifted. The term is currently used for a section of the DNA that may have functioned in the past but no longer functions. (See Who Was Adam? for an extensive discussion of the major types of junk DNA—pseudogenes, endogenous retroviruses, SINEs and LINEs—and the mechanisms thought to have generated them.) Because some identical segments of so-called junk DNA occur in a wide range of related organisms (for example, psi GULO in multiple primates) Many researchers view it as evidence for the common ancestry of these organisms, a basic tenet of evolutionary theory.

The concept of junk DNA seems to provide strong evidence for an evolutionary model and against a creation model. Such a conclusion assumes, however, that this genetic material really is junk. A growing body of research says otherwise. Biologists and biochemists continue to find evidence of function in every class of junk DNA. It appears that even the quantity of junk DNA in various organisms has been fine-tuned for a purpose. In other words, it serves as evidence for design. Although many scientists still use junk DNA to argue for an evolutionary model, the data seems a close and comfortable fit with a creation model.

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Human & Chimp DNA Similarities

A high degree of genetic similarity (as high as 99% according to some studies) between humans and chimpanzees leads evolutionary biologists to conclude the two species share a common ancestor. However, a closer look at the genomic data presents a less certain and far more complex picture. It shows significant differences between humans’ and chimps’ gene expression and regulation—most notably in regard to brain structure.

We would expect the Creator to make use of common designs when populating the Earth with life, and yet He introduced something entirely new when He made Adam and Eve. As the only creatures “made in His image,” humans are endowed with capacities uniquely associated with spirituality. Evidences shows no indication that these capacities and behaviors emerged gradually. Instead, they seem to have appeared suddenly. RTB’s creation model accommodates the for the differences and similarities scientists see in the genomic data.

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