If I remember correctly, the author falsified the pictures by pinning the moths to the Official Id Tap That Tree Vintage Shirt trees, but the findings were correct. Many people used the staged photograph to claim the entire study was a hoax. It’s not really falsification because Kettlewell didn’t claim the pictures were unstaged pictures of moths in their natural habitat. They were just to illustrate what the moths look like with different backgrounds. The fact he didn’t have better photos however made it possible for critics to speculate that the moths rarely rested on tree trunks.
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There were a few legitimate criticisms from scientists about the experiment, however. He was criticized for not taking detailed enough field notes and just not being thorough enough. There were a lot of unknowns about the Boston moth’s behavior until recently and Kettlewell failed to clear up these unknowns to a satisfactory degree. Without first eliminating all the Official Id Tap That Tree Vintage Shirt confounding factors you can’t be definite about exactly what was happening. Organisms randomly mutate, those that did in a beneficial manner happen to survive longer and pass on those genes.
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For example, the Official Id Tap That Tree Vintage Shirt peppered moth in Britain. Pre-industrial revolution, maybe like 90-95% were mostly white with black spots. The genes for darker coloring existed – these moths didn’t do as well and reproduced less, but it was not 0%. During the industrial revolution, there was a lot more soot and the darker coloring became advantageous – causing the proportion of darker coloring genes in the population to shift. But both traits were always simultaneously present. Circumstances simply caused one to become more successful than the other. Evolution isn’t intelligent really, it’s more a result of luck.
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