1-3-1-1 Introduction

0 Contents 1 Background 1-3 Biological 1-3-1 Evolution

Processes 1-3-1-3

1-3-1-2 The history of life: looking at the patterns

Source http://evolution.berkeley.edu/evolibrary/article/0_0_0/evo_03 

    The family tree
    Understanding phylogenies
    Understanding phylogenies
    Building the tree
    Homologies and analogies
    Using the tree for classification
    Adding time to the tree
    How we know what happened when
    Important events in the history of life

How does evolution lead to the tree of life?

The central ideas of evolution are that life has a history it has changed over time and that different species share common ancestors.

Here, you can explore how evolutionary change and evolutionary relationships are represented in "family trees," how these trees are constructed, and how this knowledge affects biological classification. You will also find a timeline of evolutionary history and information on some specific events in the history of life: human evolution and the origin of life.

Cladogram of select 
vertebrates showing where certain characters appear