Watch the monitors to the right of the VIEW to see Hardy-Weinberg values, genotype frequencies, and a counter for phenotypes.Watch the monitors and plots to see allele frequencies, phenotype frequencies, and population count.Press the GO-FOREVER button to observe the passage of many generations. Press the GO-ONCE button to advance one generation.INITIAL-HOMOZYGOUS-RECESSIVE-FEMALES (aa females).INITIAL-HETEROZYGOUS-FEMALES (Aa/aA females).INITIAL-HOMOZYGOUS-DOMINANT-FEMALES (AA females).INITIAL-HOMOZYGOUS-RECESSIVE-MALES (aa males).INITIAL-HETEROZYGOUS-MALES (Aa/aA males).INITIAL-HOMOZYGOUS-DOMINANT-MALES (AA males).First, set the initial population by adjusting the following sliders:.For simplicity, there are no overlapping generations. Each child receives one of the alleles from the mother and one of the alleles from the father. Inheritance of the fur coat color genes is modeled based on the laws of Mendelian inheritance.Įach mating pair produces two children. Hardy-Weinberg values, p and q, and phenotype frequencies are calculated for every generation. it produces 2 offspring with the partner p is a frequency of the dominant allele (A) and q is a frequency of the recessive allele (a).Įach clock tick is a generation in this model.Īt each generation, the following happens: A is a dominant allele, whereas a is a recessive allele. The fur color is determined by genes at a particular locus for which there are two alleles - A and a. Homozygous dominant and heterozygous mice have dark fur color, whereas homozygous recessive mice have light fur color. This fur color is decided by their genotypes. Mice in this model can have two fur colors, dark and light. The specifics of the model are designed on the basis of an Advanced Placement (AP) Biology Lab, so that students can computationally investigate the emergence of Hardy-Weinberg equilibrium values in a population that obeys Hardy-Weinberg equilibrium assumptions. The genetics is modeled on the basis of the research on the rock pocket mice populations. This context is developed into a lesson plan by the (). The context for this model is the evolution of fur coat color in rock pocket mice that are mainly found in rocky outcrops in the deserts of the southwestern United States and Mexico. As the populations reproduce, after just a few generations, the population reaches Hardy-Weinberg equilibrium. Users can set up the initial genetic composition of the mouse population and then can track genotype and phenotype frequencies in the population as the mice reproduce obeying the assumptions underlying Hardy- Weinberg equilibrium. This model allows users to explore the inheritance of fur coat color in a population of rock pocket mice to investigate the Hardy-Weinberg Principle. You can also Try running it in NetLogo Web If you download the NetLogo application, this model is included. (back to the library) Hardy Weinberg Equilibrium NetLogo Models Library: Hardy Weinberg Equilibriumīeginners Interactive NetLogo Dictionary (BIND)
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