Evolution Works
Software for Science Education

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The World View

        Evolution Works is a computer generated world where organisms compete for resources and produce offspring.  Users can view the world through the large grid on the left hand side of the screen.  Each square represents a region in the world.  If the square has food, it is colored green.  If it is barren, it is colored red.  The organisms are represented by a single character, which can be either a number or a letter.  If there are multiple organisms in a single region, they will appear as an elipse (...) on the grid.

Each Turn

        The grid will remain motionless until the user decides to advance a turn in the world.  This can be done by pressing the move button once.  Once the button is clicked, each organism will be given the opportunity to perform one action.  The organisms can either: (1) move a single square in any direciton, or (2) eat food on the square it is on.  If the organisms "decides" to spend its turn eating, it will search the square for food.  If the square is red, it will fail to find food.  If the square is green, the organism will consume the food, and the square will turn red.

Reproduction

        At the end of a predetermined number of terms, each organism will be given the opportunity to reproduce.  The organisms reproduce asexually, and will only reproduce if they choose to do so. 

Death

        If an organism fails to consume food for a predetermined number of turns, it will die.

Organism Characteristics

        Each organism has three genes: search, gather, and reproduce.  The genes determine how likely an organism is to perform a particular action.  Each turn, the organism must decide whether it will move to a new square, or consume food on the square that it is on.  The higher the number of the search gene, the more likely the organism is to move to a new square.  The higher the number of the gather gene, the more likely the organism is to gather food.  During the reproduction round, the higher the reproduction gene, the more likely the organism is to reproduce.  Each organism has a total of 150 gene points that must be distributed amongst the three genes.  Finally, when each organism reproduces, the offspring have identical genes to the parent.

The Population Table

        The table on the right had side of the screen gives a census of the world.  The table will identify each organism that is present in the world, the population of that organism, and the organism's distribution of gene points.


Screenshot of the Population Table
Screenshot of the World View

Food Replenishment and The Scenario Menu

        After a predetermined number of turns, new food will be added to the world during the regrowth stage.  There are three different scenarios on the scenario menu: grasslands, forest, and jungle.  In the grasslands, a small amount of food is deposited during the regrowth stage.  In the forest, a medium amount of food is deposited, and in the jungle, a large amount of food is deposited.
        
How to Create an Organism

        Every organism has 150 gene points that may be distributed over three genes:  search, gather, and reproduce.  To create an organism, type a number into each gene box.  The total must add up to 150.  Next, type a character into the "Symbol" box to represent your organism on the world map.  Finally, type in a number into the "Number" box, representing how many of your organism you would like to place on the map.  Hit the "Add" button and you should see your organism(s) appear on the map.