Evolution

Question 1

Define evolution.

Answer 1

Change in the genetic composition of population during successive generations which may result in the development of new species (refers to populations not individuals)

Question 2

Define microevolution.

Answer 2

Small scale variation of allele frequencies within a species or population, in which the descendant is of the same taxonomic group as the ancestor. (Same species) Note, lots of microevolution can lead to macroevolution.

Question 3

Define macroevolution.

Answer 3

The variation of allele frequencies at or above the level of species over geological time, resulting in the divergence of taxonomic groups, in which the descendant is in a different taxonomic group to the ancestor. (New species/speciation)

Question 4

What is evolutionary radiation?

Answer 4

The increase in new morphological types or taxonomic diversity over time.

Question 5

What is a mass extinction?

Answer 5

An event in which the total cessation of multiple species occurs.