Lab Report Finch's

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  • Topic: Years in the future, 21st century, 2080s
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  • Published : January 27, 2013
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How does change in precipitation changes beak size, population and the size of seeds?

By: Karen Ann Weeks
Dr. Tomáš J "Doc" Oberding
January 20, 2013

Introduction and Purpose
Hypothesis – When changing the level of precipitation which changes the seeds to hard large seeds the finches with the smaller beaks with become a smaller population when changing the precipitation which changes the seeds to smaller soft seeds will increase the population no matter what size of the beaks. This experiment is being done to study natural selection, speciation, and human evolution. Although no humans are being observed in this lab the concept of evolution is going to be looked up. The speciation is to see if by different modifications in the environment create a new species of finches. If no new species develop or the finches do not evolve to the changes in their surroundings will natural selection happen and will we no longer have finches on this island? Materials

* Computer
* Evolution Lab
* Internet
Methods or Procedures
(All changes are done to Darwin)
1. Wallace Island is kept as the controlled island and nothing is done to that island. 2. Change the precipitation on Darwin Island all the way up to 98 cm 3. Run the report
4. Change the precipitation on Darwin Island all the way up to 0 cm 5. Re-run the report
6. Change the precipitation on Darwin Island all the way up to 98 cm 7. Change the beak size all the way up to 30 mm
8. Re-run the report
9. Change the beak to 10 mm
10. Change the precipitation to 98 cm
11. Re-run the report
12. Change the precipitation to 0 cm
13. Change the beak to 10 mm
14. Re- run the report
15. Change the precipitation to 0 cm
16. Change the beak to 30 mm
17. Re-run the report
Data

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Input Parameters
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Parameter DARWIN WALLACE
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Initial Beak Size: 12.0 mm 12.0 mm
Heritability: 0.7 0.7
Variance: 1.0 1.0
Clutch Size: 10.0 eggs 10.0 eggs
Precipitation: 98.0 cm 20.0 cm
Population: 200.0 birds 200.0 birds
Island Size: 0.5 km 0.5 km

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Experimental Results
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Year Dar Beak Dar Pop | Wal Beak Wal Pop
-------------------------+-------------------
1997 11.99 200 | 11.97 200
1998 11.96 465 | 12.1 245
1999 11.92 875 | 12.11 255
2000 11.9 817 | 12.18 297
2001 11.88 907 | 12.28 284
2002 11.82 891 | 12.35 269
2003 11.83 766 | 12.38 268
2004 11.78 811 | 12.51 303
2005 11.76 838 | 12.6 278
2006 11.7 844 | 12.64 244
2007 11.61 825 | 12.7 266
2008 11.57 850 | 12.76 307
2009 11.6 792 | 12.97 293
2010 11.58 864 | 13.13 325
2011 11.55 857 | 13.11 324
2012 11.53 783 | 13.29 286
2013 11.53 824 | 13.33 336
2014 11.5 792 | 13.41 315
2015 11.42 852 | 13.43 337
2016 11.36 876 | 13.4 338
2017 11.33 841 | 13.52...
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