More evidence for evolution (Edexcel GCSE Biology): Flashcards
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Stratigraphy
Stratigraphy
Study of rock layers
Carbon-14 dating use with stone tools
Carbon-14 dating use with stone tools
Date carbon-containing material e.g. wooden handles
Dating tools by structural features
Dating tools by structural features
Simpler tools are older than complex ones
Homo habilis time period
Homo habilis time period
2.5-1.5 million years ago
Homo habilis tools
Homo habilis tools
Simple pebble tools by hitting rocks
Homo erectus time period
Homo erectus time period
2-0.3 million years ago
Homo erectus tools
Homo erectus tools
Complex tools e.g. simple hand axes
Homo Neanderthalis time period
Homo Neanderthalis time period
300,000-25,000 years ago
When hooks, buttons, needles appeared (Homo sapiens)
When hooks, buttons, needles appeared (Homo sapiens)
50,000 years ago
Pentadactyl limb digits
Pentadactyl limb digits
5 digits
Pentadactyl limb characteristic
Pentadactyl limb characteristic
Similar bone structure, different functions
What does pentadactyl limb similarity indicate?
What does pentadactyl limb similarity indicate?
Evolution from a common ancestor
Antibiotic resistance is an example of
Antibiotic resistance is an example of
Real-time natural selection