Theories of Evolution Darwin vs. Lamarck 🦒🐘

Which scientist(s) believed that there was change in population?

Darwin

Who though the following: Populations change, not individuals.

Darwin

Who thought that the giraffes with shorter necks eventually died, and the ones born with long necks lived?

Darwin

What was Darwin's Theory?

Darwin's theory was if an organism changes one of their adaptations in their lifetime, they will NOT pass it on their offspring. They will only pass down traits they inherited.

True or False: Darwin believed individual organisms changed because they wanted to survive

False

Who believed organisms can never become extinct? Was this true or false?

Lamarck believed this, but this theory is false.

What was Lamarck's theory?

Lamarck's theory was that animals changed their traits or acquired them. Then, they passed them onto their offspring who did the same. This was his theory of evolution.

Does this order represent Lamarck's theory of evolution? 1. Baby Elephants are born with stretched trunks. 2. They adapt, and stretch out their necks to access food from tall trees and plants. 3. They do not pass this trait down to their offspring. 4. Instead, their offspring stretches their necks by themselves and adapts in their own lifetime.

The answer is NO. This does not represent Lamarck's theory of passing down acquired traits. Instead, it represents Darwin's theory of evolution.

True or False: Both of the scientists believed that the environment has something to do with why organisms change.

True

True or False: Was this the order Darwin's theory of evolution? 1) Most elephants have short trunks but some elephants have long trunks 2) Short-trunked elephants begin to die off because they can't reach food and water. 3) All the elephants that survive have long trunks. 4) Living elephants with long trunks have babies with long trunks.

True