Natural Selection
What does the word "variation" mean?
Differences
What does the word "evolution" mean?
Change over time.
Looking at the bones of different organisms to see if they resemble one another.
How do we define "species"?
What is the leading cause of extinction in the world today?
climate change
What is Natural Selection?
The idea that the most well suited individuals to an ecosystem will live for longer, have more offspring and are more likely to pass on their beneficial traits.
What is an adaptation?
A mutation/change to an organism that makes it better suited to its environment
What is a "strata" in the fossil record? Which strata is the youngest? Oldest?
The horizontal layers.
Youngest = top.
Oldest = bottom.
What are the two things cladograms are based on? (what is on the top, what is on the side)?
Species and Shared Characteristics/Traits
Who is Charles Darwin?
A scientist that studied the natural world and proposed the Theory of Evolution through the process of Natural Selection.
Who are the current judges of American Idol?
There are three, you only need to list 2/3.
Luke Bryan, Katie Perry and Lionel Richie.
What is gradualism?
The idea that there is not a sudden change in a species, rather there is slow change over long periods of time.
What is a homologous structure?
How do we read a cladogram?
What is speciation?
What is necessary for Natural Selection to occur?
Variation (differences caused by mutations)
What is geographic isolation and what does it lead to?
Who sings the song called "California Gurls?"
Katy Perry
Look at the cladogram Ms. O is about to show you. What characteristics do amphibians have?
four limbs, bony skeleton and vertebrae
What children's song is the most watched Youtube video of all time?
baby shark!
Which singer holds the record for most Grammy nominations?
Beyonce (88 nominations)
What are the two claims that the Theory of Evolution makes?
(1) all living organisms have evolved from one common ancestor (nearly 4 billion years ago).
(2) Powered by "natural processes" (natural selection)
What are four different "lines" (areas) of evidence that have been used to prove the Theory of Evolution?
Comparative Anatomy
Fossil Record
Embryology
DNA/Genetics
Look at the cladogram Ms. O is about to show you. What traits do Leopards and Tuna share?
Jaws and Vertebral Columns
What does extinction mean? What causes extinctions?
All individuals in a species dying. Environmental Change.