Here's a study of wild mouse evolution in the wild (albeit a constrained area to ensure the populations could be tracked). Is that the sort of thing you had in mind?How else are we to make sure that it is not simply a case of already existing genes taking over in the population? Consider as an example when evolutionists once shouted that bedbugs evolved to be resistant to insecticide. The truth though is the protein that makes the bedbugs immune to insecticides already existed in a small minority of bedbugs and researchers merely injected that protein into a control group and then observed it become the dominant trait in that group. Scientists have known that mutations can make insects immune to the effects of insecticides for a long time. However, these are not as a result of a mutation which added new (never before existed) information.
A molecule of DDT acts by binding itself to a specific matching site on an insect’s nerve cell membrane, where it prevents the nerve from functioning properly. After enough DDT molecules are bound to the nerve cells, the nervous system breaks down and the insect dies. A mutation can occur in the insect’s DNA which makes the site that DDT attaches to, less specific (loss of information), preventing the DDT from binding to its intended site and rendering the insect immune to DDT. Of course changes in insect’s protein often render the insect less fit for its environment in some other way. After the insecticide threat is removed, the insect populations will usually switch right back to their original gene configuration. This is further evidence that this is not the kind of change that explains macro evolution.
The point I am making here is that without close monitoring and study of the change, how would you know if it was actual evidence of UCD type change or not?
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