Biological Evolution and The Darwinian Thoery

christian theologians

earth has power to produce organisms

Genesis

God created life in six days

Greeks

evolution has created the world's orgnic coherence from a formless condition

these ideas were not able to propose a good mechnism to explain how organisms vary

Challenging question to Darwin

What is the ultimate source of variation?

Mendel: anserwed the question be saying that organisms acquired through genes

Darwin noticed the Finches and the variation of their beaks

he also noticed that they varied from one island to another

His Ideas

Darwin and Wallace proposed the missing mechanism

individual members are not identical but vary

many diffrences are inherited and can be passed on to offspring

Natural selection: nature select those individuals best suited for the environment

it is a process of interaction bet. change, variation,Competition and excess

Like Newton, he formulated a theory that changed people's perspective in a more fruitfula way

Men has evolved from apes and monkies

Man, apes and monkies have same ancestor

Evolution is a "ladder of progress"

there is no ladder, it is a continous progress

It is a theory about the origins of life

Darwin was concerned about the way life changed after creation

Fossil record not complete

Fossilazation is a rare event

Evolution is not scientific

it is testable and observable and thus scientific

Evolution and religion is incompatibale

many scientists who are devoutly religious believe in evolution

Observation:The classification of species in similar groups

Explaination (Hypothesis): " All animals belonging to the same group have common ancestor

Communication to other scientists: the publishment of darwin's ideas

Test of Hypothesis: Studying fossils and comparitive morphology