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Screen Shots


1. The critters live on a virtual field. The readout shows the frames per second (FPS), time (a clock runs in the model continuously as the simulation progresses), the replicate number and total number of replicates requested, the total number of critters that have been generated in this run, the number of critters, average fitness (average number of eggs laid), reproductive rate, and death rate.


2. Close up of a critter. This critter was moving rapidly toward a close, attractive resource. There is a linear relationship between speed and short-term energy unit use. The faster they move, the more energy they burn. The energy cost and the number of type of resources are set by the user at the beginning of the simulation.


3. Critter characteristics can be seen in real time. The lower left portion of the screen shows the parameters for the critter marked on the screen. Every critter generated has a unique 'Code' number assigned to it. The gender, age, size limit (adult size), speed, color value, sensing range, current position (X, Y) are among the parameters listed.


4. Population allele frequencies for the traits in real time. Every critter carries 102 genes on 27 haploid chromosomes (204 loci in a 54 chromosome diploid individual). The sex of a critter is determined by a single gene, two allele system (homozygotes are female). The other 202 loci determine 22 additive phenotypic traits. One of two potential alleles is at each loci, and the allele frequencies listed in the screen shot below are the proportion of the 'high value' allele (i.e., the allele that produces the high phenotype value for that trait) in the population. These traits include such physical features as adult size, speed, color, sensing range (sight distance), and others (see Description for a complete list and a key to the trait codes).


Movies


Download the Quicktime Movie

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