Question

The Kermode bear is a subspecies of the American black bear that inhabits the North and Central coastal forests of British Columbia. Kermode bears express a white coat color as a result of a transition mutation in the melanocortin 1 receptor gene. Scientists have studied these unique populations for years and have documented greater fishing sucess for Kermode bears compared to black bears. The white coat provides better camouflage against a backdrop of the sky, and thus it is harder for salmon and other fish to aviod predation by Kermode ebars. Kermodism is a recessively inherited trait. A random sample of black bears from the Great Bear Rainforst found the following numbers: 4-white-coat bears (bb), 27 black-coat bears (Bb), and 19 black-coat bears (BB). A) Test for HW equilibrium and draw conclusions about forces acting on the population. B) Calculate the relative intensity of selection associated with each genotype, and indentify the type of selection.

          The Kermode bear is a subspecies of the American black bear that
inhabits the North and Central coastal forests of British Columbia.
Kermode bears express a white coat color as a result of a
transition mutation in the melanocortin 1 receptor gene. Scientists
have studied these unique populations for years and have documented
greater fishing sucess for Kermode bears compared to black bears.
The white coat provides better camouflage against a backdrop of the
sky, and thus it is harder for salmon and other fish to aviod
predation by Kermode ebars. Kermodism is a recessively inherited
trait. A random sample of black bears from the Great Bear Rainforst
found the following numbers: 4-white-coat bears (bb), 27 black-coat
bears (Bb), and 19 black-coat bears (BB).
A) Test for HW equilibrium and draw conclusions about forces
acting on the population.
B) Calculate the relative intensity of selection associated with
each genotype, and indentify the type of selection.

Added by Trinidad B.

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