Biological Evidence
Fossil Evidence
Darwin
Comparative Anatomy
Labs / Activities
100
What can you conclude if two species have very similar genes?
The two species are closely related/share a common ancestor.
100
Using relative age dating, scientists determine that the top layers of rock are ____________ compared to the bottom ones.
Younger, newer
100
Why was Darwin hesitant about publishing his research?
His research contradicted widely accepted views on the development of life
100
List an example of a vestigial structure in humans.
Tailbone, wisdom teeth, appendix
100
What adaptation were we observing in the moth lab?
Camouflage
200
What is divergence?
When species "split off" from a common ancestor to form a new species.
200
Name and describe one way fossils can form.
Mineralization, carbonization, molds and casts, trace fossils, original material
200
According to Darwin the ____________ organisms are most likely to survive in their environments.
fittest
200
A bats wings and a dragonfly's wings are examples of...
Analogous structures
200
When you were going through the Geological Time online activity how old did it say the earth was?
4.6 billion years old
300
What is embryology?
The science of the development of embryos from fertilization to birth.
300
What is the geologic time scale?
A chart that divides Earth's history into units.
300
Name an animal Darwin studied and the differences he observed.
Finches: different beaks Tortoise: different neck lengths
300
A cats leg and a frogs leg are examples of...
Homologous structures
300
How are different spoons similar to homologous structures?
All the spoons have similar structures but perform different functions.
400
What are pharyngeal pouches?
Structures in the embryos of different species that develop similar functions once the organism is developed.
400
What do scientists conclude if there are a large amount of fossils in a layer of rock, but none in the layer above it?
A major extinction event took place during that time period
400
___________________ states that organisms that are better suited to their environment live longer, compete better, and reproduce more.
Natural selection
400
The presence of pelvic bones in whales suggests...
They descended from an ancestor that had legs
400
Describe a fear that results from evolution.
Tight spaces, darkness, heights (other answers accepted)
500
Scientists have discovered a "molecular clock" for different sections of DNA. Describe how frequently this DNA changes.
Some stretches of DNA mutate at regular, predictable rates.
500
Describe absolute age dating.
Igneous rock is analyzed to determine how much has radioactively decayed over time.
500
What are the three different types of adaptations an animal can have?
Structural, Behavioral and Physical
500
Do homologous or analogous structures give us more evidence about two species sharing a common ancestor?
Homologous structures
500
The phylogenetic trees online showed that fungi are more closely related to _____________ than ______________.
animals, plants
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