Daily Warm-up February 26th What is allopatric speciation? Please provide an example. HW: -Read 18.1 Turn in: -Nothing

Classification

Scientific Names Binomial nomenclature (two-part scientific name) Each species has a unique name Ursus maritimus= polar bear Ursus= genus maritimus= species

Classification Systematics- grouping organisms together Taxa- levels of organization D, K, P, C, O, F, G, S

Evolutionary Classification Phylogeny- chart depicting evolutionary relationships Clade- group that has ancestor and all of its descendants PIT VIPER PICTURE

Cladograms Show relationships

Constructing a Cladogram Morphological data (structures, appearance) Molecular data (DNA, amino acids) **Homologies**

Characters (traits) Shared ancestral character Derived character Backbone in mammals Found in ancestor Derived character Mammary glands Unique trait to mammals