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Cladistics Cladistics: classification based on common ancestry

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Presentation on theme: "Cladistics Cladistics: classification based on common ancestry"— Presentation transcript:

1 Cladistics Cladistics: classification based on common ancestry
Phylogenetics: study of evolutionary relatedness among groups of organisms using molecular biology (DNA) and morphology (form and structure)

2 In classifying organisms, biologists try to reflect on:
A diagram that shows hypothesized evolutionary relationships is called a: or a CLADOGRAM evolutionary relationships among species. phylogenetic tree

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7 Molecular biology and computer technology innovations have resulted in an upgrade in phylogenics called cladistics. Cladistics is based on molecular biology as well as: Cladistics tries to trace To show these relationships, taxonomists use cladograms which are a type of phylogenetic tree constructed from a series of two-way branch points. The key rule on a cladogram is that organisms in a clade (group) must share inherited characteristics that unite a group of organisms. which organism descended from which organism. inherited traits that do not occur outside the group.

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