Evidence for Common Ancestry
Grade 9th Grade · Science · 60 min
What's Included
Learning Objective
I can explain how common ancestry is supported by evidence from comparative anatomy, embryology, and the fossil record.
Warm-Up Video
CrashCourse · 11:44
Evolution: It's a Thing - Crash Course Biology #20
Guided Notes
3 key concepts
- 1
The theory of evolution is a set of ideas that explains observations from embryology, paleontology, and other disciplines.
- 2
Homologous structures in different organisms, such as the forelimbs of whales, bats, and humans, suggest a shared ancestry.
- 3
Fossils of ancient cetaceans with hind legs and a pelvis show how whales evolved from land mammals, sharing an origin with bison and pigs.
Practice Questions
12 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Describe one piece of evidence from either comparative anatomy, embryology, or the fossil record that supports the idea of common ancestry.”
Complete Lesson Package
Get all 3 ready-to-use resources:
