Changes in metabolic processes.Direct evidence of evolution: Examples – 1. Bacteria acquiring antibiotic resistance 2. Insects & weeds becoming resistant to pesticides

The fossil record shows a few species near Earth’s beginning only recently branching into the diversity of today.

Structural features with a common evolutionary origin Can be similar in arrangement, function, or both.

Body parts of organisms that do not have a common evolutionary origin, but are similar in function. Example – wings on a butterfly, bird, & bat

A body structure that has no function in a present day organism but was probably useful to an ancestor. Examples – 1. Appendix in humans 2. Eyes of blind mole-rats & cave fish 3. Wings on flightless birds like ostriches

By looking at embryos, the earliest stage of growth & development, scientists have determined similarities that suggest evolution from a distant, common ancestor.

By comparing the DNA of different species, we can determine how closely they are related.

Summary List the evidence for evolution