Introduction to Darwinian Evolution

Question 1

Evolution

Answer 1

It is the accumulation of inherited changes within a population over time.

Question 2

Evolution by natural selection

Answer 2

1. Genetic variation exists among the individuals in a population.
2. The reproductive ability of each species causes its populations to have the potential to geometrically increase in number over time.
3. Organisms compete with one another for the resources needed for life.
4. Offprings with the most favorable combination of inherited characteristics are most likely to survive and reproduce.

Question 3

Adaptations

Answer 3

Evolutionary modifications that improve the chances of survival and reproductive success in a particular environment.

Question 4

Mutation

Answer 4

It provides the genetic variability that natural selection acts on during evolution.

Question 5

Evidence of evolution

Answer 5

Fossils. Biogeography. Homologous features. Homoplastic features. Vestigial structures. DNA.