Structure I
Structure II
Embryology & Genetics
Evolution & Fossils
Cladograms
100
What are homologous structures?
Body parts of organisms that are similar in structure and position, but different in function.
100
What is a vestigial structure?
Body parts that have lost their original function through evolution.
100
An antibiotic is used to kill bacteria. Their initial population was 10,000. 100 are left. What makes these remaining 100 different?
They have biological resistance
100
Naturally preserved remains, imprints or traces of organisms that lived long ago are called what?
fossils
100
Which side of the cladogram has older organisms?
The Left or the Right?
The left!
200
What is an Analogous structure?
Body parts of organisms that perform a similar function but differ in structure.
200
How are vestigial structures evidence of descent from ancestral species?
A structure with no function in a living species suggests that it descended from an ancestor that used the structure.
200
What is an embryo?
An unborn or unhatched offspring in the process of development.
200
Which of these is not evidence of two organisms having a common ancestor?
a) Both have similar anatomy
b) Both eat the same kinds of food
c) Both have similar genetics
b) Both eat the same kinds of food
200
What organism is most closely related to the jellyfish?
Scorpion
300
The wings of a butterfly and the wings of an eagle are an example of:
Analogous Structures
300
The following picture is an example of what type of structure?
What purpose did our appendix use to serve?
Analagous structures
300
According to the table below, which two organisms are most closely related?
F and G
300
This is the change in gene frequency of a population over generations
What is evolution?
300
How many derived characteristics are in this cladogram?
6
400
The leg of a cat and the wing of a bird are an example of:
Homologous Structures
400
What are examples of vestigial structures in humans?
Appendix, tailbone, wisdom teeth, goosebumps, wiggling ears, etc.
400
How is genetic evidence used to determine relationships among species?
By comparing shared genes or proteins in different species to see how closely they match. The closer the match, the more likely they're related.
400
What provides evidence that species have changed over time?
Fossil Record
400
Is the frog more closely related to the tuna or the human?
The tuna. It only has one characteristic between them. The human has two.
500
Do homologous or analogous structures give us more evidence about two species sharing a common ancestor?
homologous
500
The following picture represents what type of structures? 
Homologous Structures
500
How can embryos be used as evidence of a common ancestor between organisms?
Evidence of common anatomy in embryos suggests that they inherited the genes for that anatomy from a common ancestor
500
Put "Survival of the Fittest" into your own terms.
It is where organisms that are best adapted to their environment are able to survive and reproduce.
500
Make a cladogram!
Let's see them!