Evolution Homework 3
Part One: IDENTIFICATIONS (IDs). Use the book to help you identify the following. Be as specific as possible, and include
names, dates, and relevant facts as appropriate. Be sure to explain the significance of the term.There should be a minimum
of three (3) sentences for each ID. Use of the internet is okay if you are stuck, as long as you do not plagiarize.
Chapter 24: The Origin of Species, Page 472, 7th edition
A) Speciation and the biological species concept
B) Reproductive Isolation
C) Allopatry vs sympatry
D) Adaptive radiation
E) Punctuated equilibrium vs gradualism
F) Goal oriented evolution?
Part Two: Species Extinction. Answer using complete sentences please.
1) Using the internet, pick two species that are now extinct. One of the extinct organsisms must be human induced and the
other must be caused by something natural. For each of these organisms, complete the following:
a) Common name of the organism
b) Scientific name of the organism
c) When did the organism become extinct?
d) Why did this organism become extinct?
e) What could have prevented the extinction of this organism?
f) How long was this organism on earth (approximately) or was found in the fossil records?
2) While comparing the two species that you researched in Question 1, which organism do you think if more fit
(evolutionary fitness) for its environment? Why?
Part Three: Strata Inquiry Analysis
3) Calculate the number of species for
each strata (layer of earth).
1: ______
2: ______
3: ______
4: ______
5: ______
6: ______
7: ______
8: ______
9: ______
10: ______
11: ______
12: ______
4) Based upon your data, which layer(s)
is the most biodiverse? Why?
5) Create a bar graph of your results
using the graph below.
6) Notice that there are no fossils found
in Layers 6, 8, and 10. What do you
think happened to create these results?
7) Based upon the data, which fossil
seemed to exist the longest in history?
What conditions would lead to a long
species survival rate?
8) In Layer 1, we see the aquatic organism called a trilobite. In Layer
3, a scientist noticed a fish species that resembles the trilobite, thus
leading him to believe that the species shared a common ancestor
at one point in history. Design an experiment to test this
hypothesis.