B15.2 Theories of evolution

Question 1

What is Darwin’s theory called?

Answer 1

Theory of natural selection that tells us that all the species of living things have evolved from the first simple life forms

Question 2

What did Lamarck propose?

Answer 2

Theory of acquired characteristics which said if an animal developed a characteristic over its lifetime - it would be passed onto its offspring

Question 3

What are the problems of Lamarck’s theory?

Answer 3

Lack of evidence

People could quite clearly see the changes in their bodies such as big muscles were not passed of to their children

Question 4

What led to Darwin publishing his observations

Answer 4

Noticed beaks had different sizes due to different diet

Question 5

What is the theory of natural selection?

Answer 5

Individuals in a population show variation
Organism most adapted is more likely to survive and breed
Pass on characteristics to the next generation

Question 6

What is evolution?

Answer 6

development of all species of living and extinct organisms from simple life forms
developed more than 3 billion years ago
through a process of natural selection

Question 7

Why was Darwin’s publications delayed?

Answer 7

Pressure from Alfred Wallace