Evidence of Evolution

Geographic Distribution Geologic events have separated species into two populations. Each population lives in a new habitat with different demands.

Morphology The branch of biology that deals with the form and structure of organisms (does not take into consideration the function of those structures)

The Fossil Record The fossil record provides the story that has unfolded over four billion years as environmental conditions and genetic events work through natural selection.

DNA Analysis DNA sequences can be studied. The length and pattern found in the DNA shows higher similarities among animals more closely related, helping put the puzzle pieces its evolutionary place.

Artificial Selection The intentional breeding for certain traits, or combination of traits, by humans

Transitional Forms Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants are referred to as transitional forms

Embryology* -the study of the development of an embryo from fertilization to the fetus stage

Antibiotic (and Pesticide) Resistance

Viral Evolution Viruses have a high mutation rate. Natural selection supports why viruses (like the flu) are so hard to stop –they’re always changing…or EVOLVING.