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.

Charles Darwin

Charles Darwin was born in Shrewsbury, England on February 12, 1809, and died in 1882. Charles Darwin is best known for his work as a naturalist, developing a theory of evolution to explain biological change. Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor. Darwin's general theory presumes the development of life from nonliving and stresses and purely naturalistic. Ancient Greek Philosophers such as Anaximander postulated the development of life from nonliving and the evolutionary descents of a man from animal. Charles Darwin simply brought something new to the old philosophy. A plausible mechanism called natural selection. Suppose that a member of a species grew wings. Then the next generation will have wings to. Darwin's Theory of Evolution is a slow process. Darwin wrote, Natural selection acts only by take advantages of slight successive variations. Darwin Theory of Evolution is a theory in crisis in light in the advances we have made in molecular biology, biochemistry and genetics over the past 50 years. The tiniest of bacterial cells weigh less than 10 to the negative 12th power. We do not need microscopes to observe irreducible complexity. The eye, the ear and the heart are all examples of irreducible complexity. And that is Charles Darwin's Theory of Evolution.

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Jean Baptise Lamark

Jean was born on August 1, 1744, in the village of Bazentin-le-Petit in the north of France. He was the youngest of 11 children in a family with centuries-old traditions of military service. Lamarck rode off to join the French army campaigning in Germany in the summer of 1761. In 1778 his book on the plants in France was published to great acclaim. Lamarck was appointed an assistant botanist at the royal botanical garden. When he died, on December 28, 1829, he received and poor man's funeral. Darwin was not the first naturalist to purpose that species changed over time into new species. Lamarck took a great conceptual step and purposed a full-blown theory of evolution. Lamarck started his scientific career as a botanist. He was an expert of invertebrates, his work on classifying worms, spiders, molluscs, and other boneless creatures. Lamarck was surprised how so many of the animals had the same similarities. He argues that life is not fixed and that when the environment changes the animals have to change to. He also thinks that the offspring inherits things that the parents get after there born. So if a giraffe had a short neck when it was first born and overtime it stretched its neck to get leaves, it's offspring will have a long neck when born.

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Alfred Wallace

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.