Evolution intro notes Pg 42

Technology Evolution Timeline Pick a technology (phone, plane, etc) Follow written directions to show “evolution” over time of the technology Write on own paper ONE partner only

Charles Darwin Discovered theory of evolution and natural selection Explored Galapagos islands

Evolution The theory that organisms change over long periods of time Example: Giraffes ancestors are thought to have had shorter necks, but over thousands of years, the species began to have longer necks

Natural Selection What “powers” evolution When the species with the BEST adaptations or traits live long enough to produce offspring (which passes on their good traits to the offspring)

Adaptations- The traits animals develop over generations that help them survive Example: Long neck on giraffe or white hair on polar bear

Homologous structures

Vestigial Structures