Evolution

Question 1

What is evolution?

Answer 1

A process that results in heritable changes in a population spread over many generations

Question 2

What three things does evolution involve?

Answer 2

• change
• development
• growth

Question 3

What two things are not classed as evolution?

Answer 3

The development of an individual organism
Or
Ontogeny

Question 4

How does evolution work?

Answer 4

Starts with genetic mutation
Changes/mutations in genes lead to new forms of genes alleles
The new genes may become heritable traits
Genetic mutation can be caused by a range of factors including viruses, radiation or errors in DNA replication

Question 5

What 3 processes are thought to influence if a new trait will survive?

Answer 5

Natural selection
Genetic drift
Gene flow

Question 6

What is natural selection?

Answer 6

Described by Charles darwin
The individual which produces successfully will pass on their inherited traits onto the next generation 
More likely to be passed on if: 
-Survives to breeding age 
-Breeds successfully
-Produces a lot of offspring