Brooklyn College BIOL 1010 : Investigations
Investigations : Patterns of Evolution
Text: Pages to reference will be given in class.
Web: Mendel and Darwin's Problem
http://www.brooklyn.cuny.edu/bc/ahp/AVC/Inv/Two/VCB.Inv.Two.html
Lab Notes - Patterns of Evolution
Brother Gregory's Second Research Assignment: Phylogenies
Create and submit a portfolio following the directions given and using the data presented in ONE of the following sets:
<-- Set-B --> , --> Set-C <-- , <-- Set-D --> , --> Set-E <--
You should put into your portfolio:
- A list of binomial names for all the "Threepartites" seen
(i) which follow approved naming conventions
(ii) genus names must conform to the patterns of evolution you find. - A phylogeny for the creatures seen in the two sets you have chosen.
- A description of what has happened to the "Threepartites" and what principles of evolution the pattern represents.
- Answers to the Second Assignment Questions
Need some help getting started?
In order to determine the phylogenies of the creatures within each set of tiles, you'll need to organize your data.
The easiest way to do this, is to set up a chart which contains the following:
- determine the age of the rock (gives a time-line to work with)
- give each species a scientific binomial name
- make some notes about the creatures (size and shape)
- note the distribution and numbers of each type of organism
All you information should be put into chart form, like this:
| layer | height (cm) | tile age (my) | time line (mya) | organism (1) | size (units) | # | organism (2) | size (units) | # |
|---|---|---|---|---|---|---|---|---|---|
| 415 | |||||||||
| 6 | 37 | 37 | core bia | 4.3 | 7 | core bib | 2.7 | 13 | |
| 452 | |||||||||
| 5 | 22 | 22 | core bia | 4.3 | 30+ | core bib | 3.3 | 3 | |
| 474 | |||||||||
| 4 | 17 | 17 | core bia | 4.3 | 50+ | ||||
| 491 | |||||||||
| 3 | 47 | 47 | core bia | 4.1 | 30+ | ||||
| 538 | |||||||||
| 2 | 18 | 18 | core bia | 3.1 | 15 | ||||
| 556 | |||||||||
| 1 | 14 | 14 | core bia | 2.4 | 4 | ||||
| 570 |
Now that all the work is done, we can create our phylogeny, or evolutionary timeline, for our species.
the green line represents the time in which core bia existed, while the orange line represents core bib.
the lines are connected because a speciation has occurred at around the time of 474 million yrs ago (mya).
note, the correct usage of our binomial names (same genus, different species).
Investigations are due the next scheduled lab period.
Late investigations will NOT be accepted!
Lab Manual