Introduction to Darwinian Evolution Flashcards

Flashcards covering key vocabulary and concepts from an introductory lecture on Darwinian Evolution.

Evolution

The accumulation of genetic changes within populations over time.

Population

Group of individuals of one species that live in the same geographic area at the same time

Species

Group of organisms, with similar genetic information, structure, function, and behavior, that are capable of interbreeding with one another

Microevolution

Minor evolutionary changes of populations usually viewed over a few generations.

Macroevolution

Major evolutionary events, such as formation of different species from common ancestors, usually viewed over a long period.

Natural Selection

Darwin’s scientific explanation of evolution where better adapted organisms are more likely to survive and become the parents of the next generation.

Homology

Similarity in structure due to common ancestry.

Vestigial Structures

Anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism.

Radioactive isotopes (radioisotopes)

Present in a rock provide a means to accurately measure its age and Emit invisible radiations

Fossil

Remains or traces typically left in sedimentary rock by previously existing organisms

Biogeography

Geographic distribution of species

Comparative Anatomy

Comparison of body structures in different species

Comparative Embryology

Comparing early stages of development in different animal species