IB BIOLOGY 2 5.1 & 5.2: Evolution & Natural selection

Flash animation -- beginning of time to present day
Evolution: the cumulative change in the heritable characteristics of a population

Evidence for Evolution

1. The Fossil Record

As layers of sedimentary rock are put down. the inorganic components of plants, animals and prokaryotes are preserved. Simply put, the deeper they are, the older they are.
NOVA Fossil Evidence

2. Selective breeding

Appreciate

Credits:

Created with images by r.j.wagner - "Evolution" • ASSY - "fossil nautilus fossil petrification" • laurentarroues - "fossil museum ammonite" • Hitchster - "Fossil nautilus" • Chuck Sutherland - "Agaricocrinites sp. fossil, McClung Museum, Knoxville, Tennessee" • James St. John - "Conglomerate (Tokio Formation, Upper Cretaceous, ~85 Ma; Crater of Diamonds State Park, Arkansas, USA) 1" • Chuck Sutherland - "Agaricocrinites sp. fossil, McClung Museum, Knoxville, Tennessee" • James St. John - "Paradoxides minor fossil trilobite (Jince Formation, Middle Cambrian; Jince area, Bohemia, Czech Republic) 2" • doglung - "fossil record" • Biblioteca Rector Machado y Nuñez - ""Vespertilio Parisiensis"."

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