Wednesday, August 31, 2011

Thursday, August 25, 2011

Historical Influences on Darwin

Jean-Baptist Lamark was, I believe, one of the most influential scientists of Darwin and his development of his theory of Natural selection.

Lamark and Darwin had very different beliefs about evolution. Lamark believed that organisms had to change their behavior based on the changing environment. One of his examples was that giraffes used to have shorter necks than they do now but over time their necks grew longer because they were constantly have to reach and stretch out for food. While Lamark believed in spontaneous generation, Darwin believed in natural selection and that generations adapted to their surroundings but not by changing physically, but by passing those traits to their offspring. He believed that “species could go extinct rather than change into new forms”.  

Charles Darwin and Jean-Baptist Lamark had very different views but Lamark really influenced Darwin. Darwin was able to see Lamark’s work and provide his own ideas based off of that. It helped him to prove himself and come up with his own ideas that were completely different yet having similar concepts. Here is a link I used: http://evolution.berkeley.edu/evolibrary/article/history_09
One point stated in the outline “In order for traits to evolve and change, they MUST be heritable”. Both scientists believed this. Lamark and Darwin both believed that species changed or had to adapt according to the environment and that the offspring would have to inherit these traits as well.  

Every scientist that influenced Darwin helped him to come up with his theories and beliefs. Without their thoughts, bodies of works or experiments, there may not have been a belief of Natural selection by the famous Charles Darwin. Even though Lamark and Darwin had very different views, they helped to shape each other and their beliefs. Without disagreements, there would be no differences.

“The growing fear of evolutionary ideas led many to believe that if these ideas were generally accepted, ‘the Church would crash, the moral fabric of society would be torn apart, and civilized man would return to savagery’ (Desmond and Moore, 1991, p. 34)”. This quote from the book suggests that many proponents of evolution were anti-Christian, but Darwin went to Christ’s College Cambridge and it was there that he acquired his interests in natural science. Therefore, influencing his book, On the Origin of Species.