MadSci Network: Evolution |
One of the most misunderstood things about science is the concept of the Law. There is, in fact, no such thing as a law. What I mean by that is; all knowledge is collected by humans for their own purposes. Therefore, humans will accept answers that make the most sense to them. Merely because something makes sense to a human doesn't mean that it is true in all cases. Humans make up a tiny part of the diversity of life and an even tinier part of the universe. The smallness of our part of the universe is so small that no human mind is capable of thinking of it! Our intellectual and experimental reasoning is not identical to the extremely complex and amazing processes that formed the Earth as we know it today. When scientists call something a law they are actually recognizing that the law they are referring to predicts that something specific will happen after something else specific has happenned. This is only a prediction. Predicitons occasionally turn out to be wrong. To use Mendel's work as an example, his findings are not excepted as laws by scientists outside the biological sciences. Even biologists themselves recognize that these laws are generalizations of what could happen. If you read books about the life of Mendel, you will learn that he observed the great variation among plants. From his observations of this immense variation, he made some predicitons that will hold true with the pea plants that he grew in his garden in Germany. These assumptions, which teachers call "laws" for the sake of instruction, only hold true in his specialized experimental garden. Anywhere else in the world they are merely generalizations of what could happen. These generalizations are very useful to scientists. They use them to learn more about what is actually happenning with life on Earth. In the case of Darwinian evolution, it is the variation that Mendel and many other human beings observe everyday, that contributes to the gradual change in species that we call natural selection. I hope this helps. If this sparks any other questions, please feel free to ask. It will be more helpful when you pose a question if you can explain what it is specifically you are asking. For instance, in this question, you could of asked about specific Mendelian laws instead of all of them. Good luck.
Try the links in the MadSci Library for more information on Evolution.