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Credit: Freeimages / Katia Grimmer-Laversanne |
Evolutionary selectionism believes that outside forces called selective pressures produce DNA modifications that lead to trait variations in organisms. Thus, DNA is an accumulation of selected random variations. However, selectionism finds it difficult to simultaneously explain both variation and stasis. The dilemma is that DNA cannot be modified via random mutation without also quickly losing its ability to produce traits. In other words, this kind of variation tends to not simply alter traits but eliminate them.To read the entire article, click on "Engineered Adaptability: Blockchain-Like Process May Produce Adaptive Traits". Seems to me that the CET model is being developed on many levels, and should be very interesting to keep watching.
In contrast, computer software specialist Mitchel Soltys uses engineering principles in a model that compares DNA to a computer program that combines both instructions and data in a single stream. Though the code is bounded by fixed, top-level instructions, input data called variables enable variation. Soltys describes how this model accounts for both variation and stasis:
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