2 Homologous structures Structures that are similar but has different functionsShows common ancestry
3 Convergent Evolution Acquiring the same biological trait independently Example: FlightHumming bird and moth - last common ancestor did not have wingsThey acquired these traits separatelyOnly very few designs for a wing would allow for hovering
12 Similarities in Macromolecules: The more similar homologous proteins are in different species, the more closely related the species are thought to be.Ex: the amino acid sequence in human hemoglobin and gorilla hemoglobin differ by ONE amino acidWhile the Hb of humans and frogs differ by 67 amino acids!!
13 CoevolutionChange of two or more species in close association with each otherPredators and their prey sometimes co-evolvePollinatorsBees can’t see red, but can see in blue, yellow, and UVBee landing pad!