Topic 7- Evolution

Question 1

Define evolution

Answer 1

The formation of new species from pre-existing species over time, as a result of changes to gene pools and allele frequencies from generation to generation

Question 2

Describe the process of evolution

Answer 2

allele frequencies (within the gene pool) of a population can change over time due to processes such as natural selection
When the allele frequencies of a population change sufficiently over time, the characteristics of the species will also change
These changes can become so great that a new species forms

Question 3

In which organisms can evolution be observed in quickly?

Answer 3

organisms with a short generation time (such as bacteria)