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BIO320: Evolutionary Biology

M4.3 Discussion: Evolution of Complex Features

Background Readings

Instructions

  1. Select one complex trait or feature that you find interesting. Some examples include: eyes, ears, wings, hooves, changeable colors, etc.
  2. Read the "Sources to get you started" on your trait in the box below.
  3. Search for additional sources using the search strategy/tips provided below.
  4. Describe in detail your ideas about how the intermediate steps in the evolution of this trait or feature could have provided some adaptive benefit that would propel the continuation of this feature into the next generation.

M4.3 Sources to get you started

Birds

Insects

Bats

Snakes

Scorpions

Spiders

Mammals

Lizards

M4.3 Search Strategy

Need to find additional sources on your complex trait?

In the Search Tools box (below), click on the Switch to Advanced Search link under the OneSearch box. You will then see 3 search boxes that you can use to divide your topic into its main ideas.

In the first box, type evolution.

In the second box, type trait or characteristic. [Use OR between synonyms within the same box to search for either word.]

In the third box, type YOUR selected trait or feature. In this example, I chose eyes.

search results for search described above

M4.4 Project Work: Your Species' Fossil Record

Remember the species that you chose in Module 1? Now, you will need to search for information about the fossils and ancestors of your selected species.  First, review the readings in the M1.4 Project Work: Species Selection and Initial Research box on the module 1 tab.  Also, consult the sources that you found about your species and evolution in module 3.

Search Strategy

In the Search Tools box (below), click on the Switch to Advanced Search link under the OneSearch box. You will then see 3 search boxes that you can use to divide your topic into its main ideas.

In the top box, type the species you are researching. If it's a two-part name, like "polar bear," put the name in quotation marks. The quotation marks mean that you are searching those words as a phrase, not as individual words. Changing the drop-down list next to the box from Select a field (optional) to SU Subject terms will limit your search to only articles that include the animal as a subject term. Try it both ways!

In the second box, type the concept you are searching. Suggested terms include "fossil record," fossils, ancestors, etc.  Use OR between synonyms within the same box to search for either word. Use the asterisk * anytime a word ending can vary to retrieve all possible endings. For example, this search will return any of the following: ancestry, ancestor, ancestors, fossil, fossils or lineage.

Here's an example search:

search results for polar bear in quotes in first box as a subject and ancest* or fossil* or lineage in second box

Search Tools

Library's OneSearch

OneSearch

 Find articles, eBooks, etc.


Switch to Advanced Search

 

Note: This tool searches cover titles only, it does not search for article titles or within the text.

 
Google Scholar Search

Additional Help