The Gene Myth


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Biological variation is, in part, transmitted from parent to progeny. Tall individuals tend to have tall offspring, fast individuals tend to have fast offspring, and so forth. This transmission process is key to the action of natural selection. Those trait variations that are successful in transmitting themselves to the next generation, by definition, survived while those that failed would disappear from the population. So long as traits are transmitted, evolutionists argue that natural selection is inevitable.

In other words, whatever it is that determines your traits is also transmitted to your offspring. Therefore, if you have evolutionarily successful traits then you will have more offspring, and they will receive your successful traits.

But how are the traits defined and transmitted? Darwin didn’t quite know how but in the twentieth century it seemed obvious—via the genes. According to the merger of modern genetics and evolution, it was all in the genes. They determined your traits and they were passed on to your offspring. This view fit evolutionary theory and was quickly accepted as an unquestionable scientific fact.

There is only one problem: it is false.

The fact that our genes are practically identical with the chimpanzees genes should have been a sign to evolutionists that their gene-centric view was problematic. How could the chimp and human be so different if their genes are so similar? Nonetheless, evolutionists proclaimed the great similarity as evidence that there must be an evolutionary relationship between humans and chimps.

In fact the biological evidence is clear: genes are only part of a far more complicated story than what evolution envisioned. As Stuart Newman
explains:

Genes, which are composed of DNA, directly specify the sequences of RNA molecules and indirectly, the amino acid sequences of proteins. Before there were multicellular forms, single-celled organisms evolved for as much as two billion years driven, in part, by genetic change, as well as by establishment of persistent symbiotic relationships among simpler cells. During this entire period no cellular structure or function was specified exclusively by a cell’s genes. The protein and RNA molecules produced by cells associate with each other in a context-dependent fashion or, in many cases, catalyze chemical reactions (generating lipids, polysaccharides and other molecules), whose rates depend on the temperature and composition of the external environment. So the population of molecules inside the cell can vary extensively even if the genes do not.

It was long believed that a protein molecule’s three-dimensional shape, on which its function depends, is uniquely determined by its amino acid sequence. But we now know that this is not always true—the rate at which a protein is synthesized, which depends on factors internal and external to the cell, affects the order in which its different portions fold. So even with the same sequence a given protein can have different shapes and functions. Furthermore, many proteins have no intrinsic shape, taking on different roles in different molecular contexts. So even though genes specify protein sequences they have only a tenuous influence over their functions.

The deployment of information in the genes, moreover, is itself dependent on the presence of certain RNA and protein molecules in the cell. Since, as described above, the composition of the cell’s interior and the activity of many of its proteins depend on more than just the genes, the portion of the genes’ information content that is actually used by the cell is determined, in part, by non-genetic factors. So, to reiterate, the genes do not uniquely determine what is in the cell, but what is in the cell determines how the genes get used. Only if the pie were to rise up, take hold of the recipe book and rewrite the instructions for its own production, would this popular analogy for the role of genes be pertinent.

As Newman explains, the gene is nothing close to how evolution envisioned it. The gene myth is yet another example of evolution’s failed expectations. It seems that inevitably evolution’s interpretations turn out to be wrong as it has produced a steady stream of false predictions. Evolution is certainly the best counter indicator in the life sciences.

MAVs and Fruit Flies: Unguided Evolution Smarter Than Top Scientists


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Autonomous air vehicles are finding increasing use and the Air Force is interested micro versions:

Micro Air Vehicles (MAVs) typically UAVs with wingspan on the order of 15cm or less are fast becoming commonplace for meeting a wide range of current and future military missions.

But there are tremendous technical challenges:

A typical sensor suite for a MAV consists of GPS, MEMs-based linear accelerometers, angular rate sensors, magnetometers, and barometric-altimeters. While this is adequate for waypoint navigation, the potential of MAVs to replicate the flight agility of natural fliers (e.g., birds, bats, insects) remains elusive, especially in complex terrain such as city streets or forests.

For hints at how to solve such problems designers are looking at nature’s solutions:

The desire to engineer the agility of natural fliers has led researchers to the study of flying organisms to learn how animals combine sensory input with control output to achieve flight maneuverability. Biologists are beginning to understand how visual information is integrated with mechanosensory information in biological systems for flight stabilization, landing, and prey/mate pursuit. Studies are also underway to discover how proprioceptive sensory feedback is used for fine-scale control the movement of wings, legs, etc. during aggressive maneuvers (e.g., obstacle or collision avoidance). These sensory modalities are combined with olfactory or auditory information for predator avoidance and prey/mate pursuit.

Fortunately evolution has created highly advanced flight systems:

The fact that animals such as fruit flies exhibit such remarkable flight agility with many sensory inputs and modest onboard processing suggests a particular kind of coupling between sensing, control and dynamics altogether qualitatively different from that of engineered systems. Advancements in flow control have made it possible to control the separation of flow around wings, either to inhibit separation for higher cruise lift-to-drag ratios or to promote it for large transients in aerodynamics loading for aggressive maneuvers. Natural flyers have anatomic features which probably act as flow control devices (e.g., covert flaps) and may act as aerodynamic sensors.

But understanding evolution’s marvels remains a research challenge:

Rigorous system modeling that can accurately capture the vehicle dynamics, sufficiently accounting for uncertainties in aerodynamic and structural models, remains primitive even for engineered vehicles, let alone for natural flyers. Uncertainty arises both in the veracity of particular models in describing a given flow or dynamics phenomenon, and in unknowns in the inputs, such as wind gusts and their time-dependent effect on the vehicle. While on-going research efforts are addressing some of the critical limitations in this area, significant uncertainties in the dynamics models of MAVs are unlikely to be completely eliminated.

How do random mutations produce such brilliant designs? Answering such questions is, of course, what science is all about. As Darwin explained, evolution opens up wide areas of scientific research. But now we know it also gives top scientists hints to their toughest problems.