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  Topic: Evolutionary Computation, Stuff that drives AEs nuts< Next Oldest | Next Newest >  
Zachriel



Posts: 2612
Joined: Sep. 2006

(Permalink) Posted: Nov. 16 2009,10:51   

This is based on a modification of Gregor's Bookkeeper.

An original isogenic population with a fitness of one. Mutation is considered damage to an allele. If both alleles are damaged, then the fitness for the entire organism is zero. Otherwise, we can adjust the effect. With a slight deleterious effect of 0.1 per gene, the population is more stable than if the damage is completely hidden.

Here is a typical scenario, each with a stable population after a hundred generations.

Population = 100
Offspring per individual = 2
Recessive = -0.1
Average Fitness = 0.62

Population = 100
Offspring per individual = 1.5
Recessive = -0.1
Average Fitness = 0.41

Population = 200
Offspring per individual = 1.5
Recessive = -0.1
Average Fitness = 0.53


No beneficial mutations, no variance, no phylogenetic noise. Doesn't change the overall result anyway.

Population = 100
Offspring per individual = 2
Recessive = -0.0
Average Fitness = 0.58


With silent recessives (i.e. Recessive = -0.0), the Offsprings have to be at least ~1.9 per individual for a stable population.

-
Xposted to Telic Thoughts.
Xposted to Uncommon Descent. Hey! It showed up!!!!


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Not joey

   
  360 replies since Mar. 17 2009,11:00 < Next Oldest | Next Newest >  

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