Macroevolution

New SpeciesMacroevolutionMacroevolutionIs concerned without how new taxonomic groups came to beI.e. how did mammals evolve from ancestral reptiles

The Taxonomic GroupsDomainKingdomPhylumClassOrderFamilyGenusSpecies

Human TaxonomyDomainKingdomPhylumClassOrderFamilyGenusSpeciesEukaryaAnimaliaChordataMammaliaPrimateHominidaeHomoSapiensPneumonic DeviceDudeKingsPlayChessOnFancyGoldSetsMicroevolution MacroevolutionUsually a population gets separatedDifferent populations encounter different environments and accumulate different traitsWhen they are so different they cant reproduce- they are considered a new species

Adaptive RadiationsFrequently one really advantageous trait leads to the development of many new speciesi.e. wings allowed birds to fly- and many species of bird evolved from one ancestor

A few notesThere are a LOT of speciesPhylogenetic trees get really, really complicated and extremely detailed

How do we make the trees?We look for anatomical similaritiesSimilarities in the amino acids in their proteinsSimilarities in DNA sequenceSimilarities in behaviorSimilarities in developmentSimilarities to fossil record

UsuallyThe top means modern-day speciesAs you go lower you have the ancestors of that speciesBranching means the populations split into two different groupsThe more recently the groups branched, the more closely relatedThe higher on the tree you group things, the more specific the groupExample

As a Class We Will Make Our Own Phylogenetic TreeEach group will cover a major branch on the Tree of LifeIdentify the unique features of that group, anything important or interesting about them, and examples of members. Present them to the classYou will be quizzed on the main points on all of the groups