![]() ![]() ![]() ![]() Johnson chronicles the everyday life of the average english man and woman, and in doing so, reveals the intricacies of changing the way a society thinks and responds to change. John Snow’s remarkable discovery of how Cholera was spread in the 19th century. Human genetic change is several orders of magnitude slower we have to go through a whole fifteen-year process of maturation before we can even think about passing our genes to a new generation. The Ghost Map by Steven Johnson is a very detailed account of Dr. Each new generation opens up new possibilities for genetic innovation, either by new combinations of existing genes or by random mutations. For one, bacterial life cycles are incredibly fast: a single bacterium can produce a million offspring in a matter of hours. Bacteria and viruses evolve at much faster rates than humans do, for several reasons. This is an evolutionary principle that has long been observed in populations of disease-spreading microbes. It also greatly increased the lethality of the bacteria. cholerae circulating through the small intestines of mankind. “The contamination of drinking water in dense urban settlements did not merely affect the number of V. ![]()
0 Comments
Leave a Reply. |