Evolution 1
Change over time
Evolution
Preserved remains of ancient organisms
Fossils
Proposed the theory of evolution by natural selection
Charles Darwin
Extinction
What happens if a species cannot adapt to changes in the environment?
What is it may go extinct?
Another term for Natural Selection
Survival of the Fittest
The islands Darwin visited
States that the oldest rock layers are on the bottom, youngest on the top
Law of Superposition
The two main goals of all species
Survive and reproduce
Name a cause of extinction due to environmental changes?
What is loss of habitat, climate change, or new predators
Genetic information that can be used to find relationships between organisms and prove evolution
DNA
A group of simliar organisms that can have offspring together
Species
Their environment
Give an example of a trait that could provide an advantage in a cold environment.
Thick fur
What might happen to a population during a drought?
A: What is only individuals with drought-tolerant traits may survive?
Name of Darwin's ship
The HMS Beagle
A student wonders if studying longer leads to better test scores. She studies for different amounts of time before each quiz and records her scores.
What is the independent variable?
What is the dependent variable?
IV: Time studying
DV: Her scores
What units of genetic material determine what living things look like?
Genes
How does the inability to adapt lead to extinction?
A: What is individuals can't survive or reproduce under the new conditions
What happens when a trait increases an individual's ability to survive and reproduce?
A: What is the trait becomes more common in the population?
What role do variations within a population play in natural selection?
a. Variations lead to a uniform population where all individuals are the same.
b. Variations have no impact on the survival rates of individuals.
c. Variations guarantee that all individuals will survive environmental changes equally well.
d. Variations allow some individuals to have traits that may give them a survival advantage in a changing environment.
d. Variations allow some individuals to have traits that may give them a survival advantage in a changing environment.
Why might some traits become more common in a population over time?
A: What is because individuals with advantageous traits are more likely to survive and reproduce?
What changes did Darwin observe in finches in the Galapagos
Beaks
Why is the fossil record considered incomplete?
A: What is because not all organisms fossilize and many fossils have not yet been found?
During the Industrial Revolution, the population of dark-colored (melanic) peppered moths increased while the population of light-colored moths decreased. However, after pollution levels dropped, the population of light-colored moths increased again.
Based on this, explain how natural selection acted on the moth population
Answers Vary