Evolution
How old is Earth?
4.5 billion years old
What does the gene flow do?
When individuals move in and out of a gene pool.
What is the homologous structure?
Similar structures inherited from a common ancestor.
What muscle pumps blood through blood vessels?
The heart
What is biogeography?
What does evolution mean?
A process that results in changes in a population over time.
What is the genetic drift?
Random changes that happen in a small population.
What is the Analogous structure?
Structures that are similar in unrelated organisms.
What 3 roles does the muscular system have?
Motion
Maintenance of posture
Heat production
What does DNA stand for?
Deoxyribonucleic Acid
What animals went extinct first?
Steller sea cow
Describe plant cells.
A basic unit of any plant.
What is a paleontologist?
Scientists that study fossils.
How many bones do humans have?
206
How does fitness help the animals?
Its there ability to survive.
How did evolution begin?
Likely RNA or a similar molecule.
What is the gene pool?
All genes of all the members of a population.
What is Taxonomy?
Science of classifying organisms.
The central nervous system controls what?
The brain and the spinal cord
What's a population?
The number of a specific species in a given area.
Who was Charles Darwin?
A naturlist
What is natural selection?
Different fitness in a group.
What are fossils?
Preserved artifacts
What is the main organ in the human body?
The lungs
What's coevolution?
The species in symbolic relationships tend to evolve together.