1. Theories to explain Evolution
Lamarck
Darwin

2. Lamarck’s Theory page 376 Use and disuse of organs
Inheritance of acquired traits
Giraffes:

3. Darwin’s Theory pgs 378-381 Natural Selection Overproduction
Struggle for existence
Variations
Survival of the fittest
Inheritance of variations
Giraffes:

4. Survival of the Fittest
Overproduction
Struggle for Existance
Fish eggs
Survival of the Fittest
Mushroom spores
Variation exists and these variations are passed on to offspring

5. Darwin OR Lamarck?
A population of scallops had no eyes. However, some scallops,through a mutation, had an area that could sense light and dark. This increased it’s chances of survival. After MANY generations, the entire population could sense light and dark.
A man of small build wants his children to have a muscular build. He figures if he works out constantly and his muscles develop, then his children will inherit this muscular build.

6. Darwin vs. Lamarck
Snakes evolved from lizards that began burrowing into the ground to get away from predators
How would Darwin explain how snakes evolved?
How would Lamarck explain this?