#Rock pocket mouse worksheet answer key download

Observe how the changes in the population composition (i.e. The predation probability reduces depending on how well a mouse camouflages, based on its fur coat color and the color of surroundings. If PREDATION? is ON, CHANCE-OF-PREDATION can be adjusted from 0 to 0.50.ĬHANCE-OF-PREDATION determines the probability of a mouse dying from predation in each generation. PREDATION? is a chooser that can be ON or OFF.

Watch the monitors and plot below the initial settings and make observations about this data.

Press the GO button to watch the generations advance indefinitely until stopped.

Press the GO-ONCE button to advance the generations once at a time.

Adjust the CHANCE-OF-PREDATION slider if PREDATION? is on.Make sure the PREDATION? switch is in the preferred setting.Press the SETUP button and then select a background by pressing the SET-LIGHT-BACKGROUND, SET-DARK-BACKGROUND, or SET-MIXED-BACKGROUND button.INITIAL-HOMOZYGOUS-RECESSIVE-FEMALES ( aa females).INITIAL-HETEROZYGOUS-FEMALES ( Aa or aA females).INITIAL-HOMOZYGOUS-DOMINANT-FEMALES ( AA females).INITIAL-HOMOZYGOUS-RECESSIVE-MALES ( aa males).INITIAL-HETEROZYGOUS-MALES ( Aaor 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 its mother and one of its alleles from the father. Inheritance of the fur coat color genes is modeled based on the laws of Mendelian inheritance.Įach mating pair produces four children. if a mouse does not get to reproduce and is over 10 generations old, there is a chance that it dies from old age.if the mouse survives predation, it finds a partner and produces 4 offspring with this partner.it is possibly predated (if 'predation?' is ON) based on the chance of predation and how well it can camouflage with the surroundings.a mouse moves slightly in a random direction.A is a dominant allele, whereas a is a recessive allele.Įach clock tick is a generation in this model.Īt each generation, the following happens: The fur color is determined by genes at a particular locus for which there are two alleles - A and a. This fur color is decided by their genotypes with homozygous dominant and heterozygous genotypes resulting in dark fur color, whereas homozygous recessive results in light fur color. Mice in this model can have two fur colors, dark and light. Users can investigate how the population evolves because of natural selection across various environmental conditions. The mice that cannot camouflage themselves have a higher chance of being predated when there are predators present. The model simulates fur coat color changes in the population of rock pocket mice due to predation. This model is based on a lesson plan designed by the (). This model simulates natural selection and adaptation in populations of rock pocket mice, which are found mainly in rocky outcrops in the deserts of the southwestern United States and Mexico. You can also Try running it in NetLogo Web

#Rock pocket mouse worksheet answer key download

If you download the NetLogo application, this model is included. (back to the library) Natural Selection - Camouflage NetLogo Models Library: Natural Selection - Camouflage