Evidences of Evolution
The layer of sediment with the oldest fossils
What is the bottom layer?
The origin of an organism from which it has developed or descended
Ancestor
Yellow fish are eaten faster than blue fish. Can the yellow fish decide to change their color to avoid predation?
No, fish cannot decide to change their color. The blue fish are more fit to their environment, and therefore will survive and reproduce more successfully.
Charles Darwin is known for discovering
What is evolution?
Snakes having a pelvis is an example of a
What is a vestigial structure?
Strong and not likely to change
Stable
The faster rabbits will survive and reproduce, increasing the average speed of the rabbit population.
For his research, Charles Darwin traveled to
What are the Galapagos Islands?
Humans sharing the same bones in our arms as bats is an example of
What is a homologous structure?
to breed with a different species
interbreed
Describe one way a cactus is adapted to its' environment.
What are:
shallow roots to absorb the most surface water
ability to store water in its' paddles
spines to protect itself from predators
Charles Darwin studied animals such as
What are finches?
Scientists can determine the relatedness of different species by examining their DNA sequences. Scientists compared the DNA sequences of the organisms below.
DNA Sequences
Organism A: AAA ATT CGT
Organism B: AAT ATT CGT
Organism C: AAA ATT CCA
Organism D: ACC TCC TGA
The organism closes related to organism A is
Who is organism B?
argued with someone's belief
Describe the word "fitness" as it relates to natural selection
What is the ability to survive, find a mate and produce offspring?
Why were the beaks different on the Galapagos finches?
What are different food sources?
Describe how biogeography is evidence for evolution
Biogeography is the study of the geographical distribution of organisms, provides information about how and when species may have evolved.
Describe 3 ways in which tortoises are adapted to their environment
1. shell for protection
2. color for camouflage
3. beak for crushing food
What book did Charles Darwin publish on his findings from the Galapagos Islands?
On the Origin of Species by Means of Natural Selection