Is Bacterial Resistance to Antibiotics an Appropriate Example of Evolutionary Change?

      Comments Off on Is Bacterial Resistance to Antibiotics an Appropriate Example of Evolutionary Change?

Kevin L. Anderson

Evolutionists frequently point to the development of antibiotic resistance by bacteria as a demonstration of evolutionary change. However, molecular analysis of the genetic events that lead to antibiotic resistance do not support this common assumption. Many bacteria become resistant by acquiring genes from plasmids or transposons via horizontal gene transfer. Horizontal transfer, though, does not account for the origin of resistance genes, only their spread among bacteria. Mutations, on the other hand, can potentially account for the origin of antibiotic resistance within the bacterial world, but involve mutational processes that are contrary to the predictions of evolution. Instead, such mutations consistently reduce or eliminate the function of transport proteins or porins, protein binding affinities, enzyme activities, the proton motive force, or regulatory control systems. While such mutations can be regarded as “beneficial,” in that they increase the survival rate of bacteria in the presence of the antibiotic, they involve mutational processes that do not provide a genetic mechanism for common “descent with modification.” Also, some “relative fitness” cost is often associated with such mutations, although reversion mutations may eventually recover most, if not all, of this cost for some bacteria. A true biological cost does occur, however, in the loss of pre-existing cellular systems or functions. Such loss of cellular activity cannot legitimately be offered as a genetic means of demonstrating evolution. Read more…

Share

Dinosaur Nests Reinterpreted

      Comments Off on Dinosaur Nests Reinterpreted

Walter R. Barnhart

Supposed nests of dinosaur eggs are examined for indications that they were laid under normal subaerial conditions. It is shown that when representative clutches of eggs are examined from numerous sites worldwide, they were all laid into a watery environment in which sedimentation was often actively taking place. This leads to the conclusion that dinosaur nests, as they are presently found, cannot represent normal living environments for the dinosaurs and instead show life existed at the survival level under highly stressed conditions. These conditions are consistent with egg laying taking place during a worldwide flood. Read more…

Share

Deposits Remaining from the Genesis Flood: Rim Gravels in Arizona

      Comments Off on Deposits Remaining from the Genesis Flood: Rim Gravels in Arizona

Michael J. Oard and Peter Klevberg

Well-rounded coarse gravel provides clues to the depositional process. The coarse gravel of the Mogollon Rim in central and northern Arizona, called Rim Gravel, was examined at two widely separated and representative locations. Further characteristics of the coarse gravel was obtained from the literature. The coarse gravel occupies the highest terrain in the region and is very coarse in east-central Arizona. It is deduced that this coarse gravel was deposited as a sheet and eroded into remnants during the Recessional Stage of the Genesis Flood. We conclude that the Rim Gravel provides evidence that the Flood/post-Flood (D/P) boundary corresponds to the stratigraphic location of rocks termed “late Cenozoic” in the uniformitarian geological column in this part of the western United States. This interpretation is relevant to theories for the formation of many notable geomorphic features, including the Grand Canyon of the Colorado River. Read more…

Share