Study of Evolution
Brief Definition of Evolution
Biological evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life. Biological evolution is not just matter that changes over time. When you plant a tree today, it will not be the same as when you planted it a 100 years ago. When a flower is first planted it grows blooms, soon enough there will be peddles. The central idea of Biological evolution that all life on earth shares a common ancestor. Just like at as you and your cousins share a common grandmother. Evolution means that we are all distant cousins: humans and oak trees, hummingbird and whales. Evolution is the process by which modern organisms have descended from ancient ancestors. Evolution is the process that results in heritable changes in a population spread over many generations. Evolution can be precisely defined as any change in the frequency of alleles within a gene pool from one generation to the next.
Jean Baptise Lamark
Alfred Russel was born on January 8, 1823 in Monmouthshire, England. Wallace died on November 7, 1913. Wallace was the eighth of nine children, whom three did not make to adulthood. In 1828 when Wallace was five, he and his family moved to Hartford and there is where he received his formal education. In 1852 Wallace was in poor health and decided to return to Britain. On his voyage to Britain disaster hit and his boat sand, but he did not die. In 1858 he was suffering for fever when the idea of natural selection as the mechanism of evolutionary change occurred to him. Wallace's intelligent evolution contrasted with Darwin's evolution. Both of their theories of evolution both include change over time, but Wallace's evolution limits the power to natural selection. Wallace was basing his theory on Darwin's of utility insisted that where no clear survival advantages. Wallace and Darwin were both very committed to science, but there conceptions on science were dramatically different.