Section 10.1 Early Ideas about Evolution
Early scientists proposed ideas about evolution
Theories of geologic change set the stage for Darwin’s theory
What did Linnaeus define a
According to Lamarck, what would happen if you didn’t use a structure or an organ, say like when you have had a cast on a limb?
According to Lamarck, how did the giraffe get its long neck?
How old did they think the earth actually was? _______________ It is really 4.6 billion years old!!!
What is a
How did fossils help
develop his theory that
species could go extinct
and Cuvier’s concept of organisms going extinct work together?
. What was this concept about?
. What was meant by this concept?
Now I want you to think on your own. Taking what these men proposed, could a species change over time on our earth? Put all the terms together and
propose your own theory of evolution
Lamarck believed that traits we acquire in our lifetime could be passed on to our offspring (inheritance of acquired traits). Think of what we learned in Genetics. Do we pass on traits we acquire in our lifetime such as getting our nose fixed or our vision corrected by eye surgery? If we dye our hair a different color or straighten it every day, will we pass this off to our offspring? Explain your answer using genetics.