Vocab
Fossils and evolution
Natural Selection
Structures and Relationships
Dating Rocks
100
This is a change in an organism’s DNA that can lead to new traits
What is a mutation?
100
Fossils found in these rock layers are typically older.
What are deeper layers?
100
The process that favors traits helping organisms survive and reproduce.
What is natural selection?
100
These structures have the same function but evolved independently.
What are analogous structures?
100
Comparing the ages of rocks based on their position in layers is called this.
What is relative dating?
200
This is when a species no longer exists.
What is extinction?
200
Fossils provide evidence of this connection between species.
What is common ancestry?
200
Differences in traits within a population are called this.
What is variation?
200
Humans and chimpanzees share this type of ancestor.
What is a common ancestor?
200
This type of dating gives the exact age of a rock.
What is absolute dating?
300
These are body parts in different species that have a similar structure but different functions.
What are homologous structures?
300
This is the process through which species change over time.
What is evolution?
300
Organisms with traits that help them survive pass them on to __________.
What is the next generation?
300
This type of structure shows how species are related through evolution.
What are homologous structures?
300
This method is often used in absolute dating.
What is radiometric dating?
400
These body parts have lost their original use but still remain in an organism.
What are vestigial structures?
400
Fossils help us understand how species adapt to their __________ over time.
What is environment?
400
Give an example of a trait that might help an animal survive.
What is camouflage, speed, or sharp claws?
400
Draw a phylogenetic tree with four related species.
400
If fossils are found in a shallow layer, they are usually __________ than fossils in deeper layers.
What is younger?
500
This diagram shows evolutionary relationships based on common ancestors.
What is a phylogenetic tree?
500
These structures, like a whale’s pelvis, show evidence of evolution.
What are vestigial structures?
500
This term describes a helpful trait that develops over time.
What is adaptation?
500
Name one example of an analogous structure.
What are wings of a bat and wings of a butterfly?
500
This is the main difference between relative dating and absolute dating.
What is relative dating compares ages, while absolute dating finds the exact age?