Dolphin evolution

Páginas: 6 (1295 palabras) Publicado: 7 de noviembre de 2010
Evolution by Natural Selection Report
Oldemar Villatoro
BIO101- Principles of Biology
November 3, 2010
Steven Gild
Evolution by Natural Selection Report
Evolution by natural selection report will explain the results of an evolution lab; I will use information of two different islands named Darwin Island and Wallace Island. On those two islands I will review apopulation of finches. The lab information provide basic data  that I will change to look out what will happen changing original data that has been provided. I will use one hundred years period to observe the simulation. I will change beak size, variance, heritability, clutch size, island size, population, and precipitation to observe and analyze finches’ beak and population evolution. According toUOP “Evolution is the study of how modern organisms have descended from the earliest life-forms and of the genetic, structural, and functional modifications of a population that occur from generation to generation” (2010, par 1).
My personal computer and the evolution lab available at University of Phoenix student Website:
To observe finches’ beak evolution, I review the original data provided for evolution lab Website on both islands: Darwin Island and Wallace Island, the original data provide on one hundreds years are
|Darwin Island |Wallace Island |
|Input summary |Input summary |
|Beak Size |12 mm|Beak Size |12 mm |
|Variance |1.00 |Variance |1.00 |
|Heritability |0.70 |Heritability |0.70 |
|Clutch Size |10 eggs |Clutch Size |10 eggs |
|Island Size |0.5 km |Island Size |0.5 km |
|Population |300 |Population |400 |
|Precipitation|20.0 cm |Precipitation |20.0 cm |

I changed the data inputs and replace its values with the following information:
|Darwin Island |Wallace Island |
|Input Summary |Input Summary |
|Beak Size |20 mm |Beak Size |25 mm |
|Variance |1.00 |Variance|1.48 |
|Heritability |0.50 |Heritability |0.70 |
|Clutch Size |20 eggs |Clutch Size |10 eggs |
|Island Size |0.5 km |Island Size |1.0 km |
|Population |300 |Population |400 |
|Precipitation |25.0 cm |Precipitation |15.0 cm |

I kept the period time of onehundred years to observe and analyze finches’ peak evolution. After I changed the input data, I click on run experiment link to generate the experimental results. The evolution lab provides a likelihood graphic that represent the new input variance beak size and heritability for Darwin Island and Wallace Island. The evolution lab provides pictures of clutch size and island size population thatrepresent the new input data for Darwin Island and Wallace Island.
Evolution lab represents precipitation graphs for hard seeds, medium seed, and soft seed for both islands (Darwin and Wallace islands). Evolution lab report has a menu that will show graphics for average beak size over time, finch population over time, and histograms for both islands (Darwin and Wallace Islands). Finally theevolution lab has another option that will show beak mean and population during the one hundreds years and the new input summary, next table show input data for both islands.
|Parameter |Darwin Island |Wallace Island |
|Initial Beak Size |20.0 mm |25.0 mm |
|Heritability |0.50 |0.7 |
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