The Double Helix
...mine and disease or even by war. After reading this essay, Darwin immediately began to apply Malthus’s theory to plants and animals. In 1838 he eventually came up with a sketch of a theory of evolution through natural selection. Since Darwin did not have to earn an income because he was wealthy already, for the next twenty years he worked on this idea of evolution. Darwin’s theory was first announced in 1858. It was announced in a paper presented at the same time as a paper by Alfred Russel Wallace. Wallace was a young naturalist who had, on his own, come to the theory of natural selection. Darwin’s full and complete theory was published in 1859. It was published as On the Origin of Species. This book was often referred to as the “book that shook the world,”. Darwin’s theory is because of the food-supply problem described by Malthus, the young born to any species compete for survival. Those young that survive to produce the next generation tend to embody favorable natural variations, and these variations or traits could be immense or slight and were passed on by heredity. Therefore, each generation will improve adaptively over the preceding generations, making the species eventually, "evolve" over time. Darwin also introduced the concept that all related organisms are descended from common ancestors. Darwin’s ideas were not recognized til later years since many people still believed God created us all. If only scientists worked together and, Darwin’s theory may have been thought of earlier and been believed earlier. With the Double Helix, all the scientists involved helped each other and shared their findings. A good example of scientists working together are Watson and Crick.. "This structure has novel features which are of considerable biological interest," they wrote. On April 25, 1953, the molecular biologists James D. Watson and Francis H. C. Crick published their paper in Nature. They described the geometric shape of DNA. The molecule was, they said, in the form of a double helix. Two helices that spiral around each other, connected by molecular bonds, to resemble nothing more than a rope ladder that has been repeatedly twisted along its length. Their Nobel Prizewinning discovery opened the door to a new and different understanding of life in general. It also made a new understanding in ...