Lamarck and Darwin

Question 1

Lamarack Ideas of evolution

Answer 1

Use and disuse
body parts used extensively will become larger and stronger
those not used will deteriorate

Inheritance of these acquired characteristics
- modifications are passed on to offspring

Question 2

Darwin’s theory of evolution steps.

Answer 2

1. More offspring are born than survive to reproduce
2. Variety exists in all species
3. Those varieties that are “better adapted” to the environment are more likely to survive and reproduce - ‘survival of the fittest’. Less ‘fit’ individuals are weeded out by Natural Selection
4. If the characteristics of different varieties are inherited by their offspring,
   then the nature of a species will slowly change