The following questions) are based on information in Hopi E. Hoekstra, Kristen E. Drumm, and Michael W. Nachman, "Ecological Genetics of Adaptive Color Polymorphism in Pocket Mice: Geographic Variation in Selected and Neutral Genes," Evolution 586) , 2004: 1329- 41.
Figure 22.1
-Refer to Figure 22.1. In their investigation of natural selection on Mc1r alleles the gene that determines coat colour) in Arizona pocket mice, Hoekstra et al. determined the frequency of the D and d alleles in each population. They also determined the frequency of alleles for two neutral mitochondrial DNA genes genes that do not affect and are not linked to coat colour) . Why did the researchers include the mitochondrial DNA genes as part of their experimental design?
Definitions:
Substitutes
Goods or services that can be used in place of one another. When the price of one rises, the demand for its substitute is likely to increase.
Elastic
Describes a situation in which the supply or demand for a good or service is highly responsive to changes in price.
Long Run
A period in economic analysis where all factors of production and costs are variable, allowing for full adjustment to changes in the market or economy.
Short Run
A period in economic theory during which at least one factor of production is fixed, limiting the capacity to adjust to changes in market demand.
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