Greater Prairie Chickens,large Birds Related to Grouse,once Maintained Population Sizes

question 19

Essay

Greater prairie chickens,large birds related to grouse,once maintained population sizes of hundreds of thousands on the North American Great Plains.As more and more of the native grassland was converted to farms,the number of greater prairie chickens declined,and the species nearly went extinct due to loss of habitat.Assume that a locus segregating for two alleles,A and a,each with a frequency of 0.5,existed in greater prairie chickens before the reduction of habitat.Further,assume that this species was fragmented into genetically isolated populations,containing very limited numbers of individuals.What effect on allele frequencies would one expect to find in the greater prairie chicken populations after the losses and fragmentation of habitat?

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Definitions:

Cost-to-retail Ratio

A method used to estimate the value of ending inventory based on the ratio of the cost of goods available for sale to the retail price of those goods.

Ending Inventory

The worth of products ready for sale at the close of an accounting cycle, determined by adding the initial inventory and purchases, then subtracting the cost of goods sold.

Retail Inventory Method

An accounting method used to estimate inventory value by calculating the cost to retail price ratio.

Cost To Retail Ratio

A method used in retail to calculate inventory value by comparing the cost of goods to their retail price.