Transcript Evolution Scavenger Hunt

Evolution Scavenger Hunt
HISTORY OF EARTH POSTER
According to this geological time scale, Which geologic time period was the longest? __________
How long? ___
According to the time scale, near the end of which era did the dinosaurs become extinct?
__________________
According to the time scale, describe the most recent geologic event to occur?
Describe what type of environment early forms of life survived within?
Was there oxygen present during the Silurian Period? ________________________ How did you come
to this conclusion?
According to the time scale, how many years ago did the extinction of the dinosaurs occur?
_________________
FOSSIL RECORD POSTER
Evidence of Evolution helps support the theory that all organisms have
descended from a __________________.
According to the Law of Superposition, Which rock layer is the oldest?
_______________________
According to the Law of Superposition, Which rock layer is the youngest?
_______________________
Which layer has the oldest fossils? _________________________
Which layer has the youngest fossils? ___________________________
A. Fossils found in layer C are circle one (
fossils found in layers D and E.
older
or
younger) than
B. Fossils found in layer C are circle one (
fossils found in layers A and B
older
or
younger) than
FOSSILS OF HORSE POSTER
Studying the figure of horse fossils, describe what happened to the
size of the horse? ______________________
The earliest horse had circle one (one
or
many) toes.
How many toes does a modern horse have?
___________________________ What is it called? (use your own
experience to answer) _______________________________.
BIOGEOGRAPHY
Biogeography is the study of how species are distributed spatially across the landscape (geographically). How species are
distributed provides evidence for evolution. The distribution of many species does not make sense, unless they shared a common
ancestor. For example, if species were static (unchanging), then you would expect to find the same species in areas with similar
environmental conditions around the world. Evolutionary theory, however, predicts that modern species should be found close
to where their ancestors were, regardless of the environmental conditions. Use the poster to answer the questions below:
Which island is most likely to have been colonized first and which last? (You will need to analyze map 1) Tell why you think so.
First _________________________________
Last _______________________________
Where did the common ancestors of the Canary Islands probably originate from? (use map 1 to answer)
____________________________________________
Does the presence of four morphologically different populations ofG. galloti on the four westernmost islands (Map 2) imply
continuing evolution? Be sure to explain why.
Which island is more likely to resemble their common ancestor from Africa? Why? ______________________
Which island will have more species diversity? Why? ____________________
COMPARATIVE EMBRYOLOGY
What is an embryo?
___________________________________________________________________________
_______________________________________________________________________________
____________
The adult forms of these organisms look very circle one (
different ).
The earliest embryos look very circle one (
similar
similar
or
or
different
).
From observations of these embryos, Which organisms are MOST closely related?
Chickens and Humans
c. Fish and Pigs
Pigs and Humans
d. Turtles and Pigs
From observations of these embryos, Which organisms are LEAST closely related?
Fish and Turtles
c. Pigs and Chickens
Fish and Humans
d. Pigs and Humans
Embryos that are MOST alike are those that are the circle one (
) closely related.
Embryos that are LEAST alike are those that are the circle one (
) closely related.
most
most
or
least
or
least
COMPARATIVE ANATOMY
Define the following:
HOMOLOGOUS STRUCTURE: _____________________________________________________________
ANALOGOUS STRUCTURE: _______________________________________________________________
VESTIGIAL STRUCTURE: _________________________________________________________________
Refer to Figure C. Are these structures in Figure C circle one homologous or analogous structures? Explain your reasoning using complete sentences.
Refer to Figure C. What is the function of these skeletal structures?
Refer to Figure C. Anatomy shows that these animals circle one (
Do
or
Do Not ) have a common ancestor.
Refer to Figure D. Are these structures in Figure D circle one homologous or analogous structures? Explain your reasoning using complete sentences.
Refer to Figure D. What is the function of these skeletal structures? How is a bird wing different structurally than a bee wing?
Refer to Figure D. Anatomy shows that these animals circle one ( Do
or
Do Not ) have a common ancestor.
Refer to Figure D. Anatomy shows that birds and bees are circle one ( distant
Refer to Figure D. Birds and bees circle one ( did
or
or
close ) relatives.
did not ) develop along the same evolutionary “branch”.
Refer to Figure E. Explain how a vestigial structure is evidence for evolution?
Refer to Figure E. Why might a whale have a pelvis and femur in its skeletal structure? Explain your answer.
COMPARATIVE BIOCHEMISTRY
Using the Hemoglobin Chart, Compile these amino acid differences in
Table :
Table: amino acid difference between humans/species pairs.
If the amino acid sequences in homologous proteins of two organisms
are similar, what can you conclude about the DNA of the two
organisms?
In humans and gorillas there is a difference of only one amino acid in
one chain of hemoglobin. Give a possible explanation for this.
Using the hemoglobin data you collected, which organisms appear most
closely related to humans? _________________
Which appear to be least related to humans? _____________________
Organisms
Human/ chimpanzee
Human/ gorilla
Human/ rhesus
monkey
Human/ horse
Human/ kangaroo
Number of
Amino Acid
Differences
0
1
Positions #
where they
vary
104