Theories Of Evolution

Evolution is the process of change that diversified organisms from their basic beginnings on Earth. A principle of the evolutionary theory is that all living things are derived from an original common ancestor, the earliest form of life. This common ancestor theory is backed up evidence that supports it such as fossils and the genomes of many species that have been compared and found to be extremely similar. There are several mechanisms to evolution such as natural selection and genetic drift. It is important to note that genetic mutations lead to variation, and these mutations can be beneficial and will be passed down from generation to generation. This is all part of evolution, as the changes within organisms that help them to survive, are the ones that are passed down, allowing them …show more content…
In the article it describes the genes from the Pax6 family being able to develop eyes in animals ranging from flies to people. This shows that despite the physical differences between flies and humans, our basic building blocks are fairly similar. Scientists studied the beaks of birds and discovered that the stronger BMP4 was expressed, the stronger and larger the beak. This applied to all birds, but was not limited to birds, as it was discovered in fish. Except in this case, BMP4 aided in the development of the fish’s jaws. That being said, scientists can use mice to understand humans because of the similar pieces of DNA and RNA, by knowing what each element does. They can then use what they know to alter other pieces of DNA and use it to further improve any issues that have come up. By observing other organisms, scientists will be able to develop a better understanding of all organisms, because of the similarities that can be linked between the model organism and the organism that needs to be