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A population of Hawaiian Drosophila has two alleles (M and m) of a particular gene. In a sample of 100 flies from this population, 3 were MM homozygotes, 60 were Mm heterozygotes, and 10 were mm homozygotes.  Perform a chi-square test, to test the hypothesis that the observed numbers of […]

A. At one time the continent of Australia was connected to Asia. About 50 million years ago Australia became separated. It has many unusal animal not found elsewhere, such as the kangaroo and the koala bear. Using the concepts of geographic isolation the gene pool, explain why these animal developed. […]

Aspirin is a weak acid as shown below that is taken up into the bloodstream by diffusion through cells lining the stomach and the small intestine. Aspirin crosses the plasma membrane of a cell most effectively in its uncharged (protonated) form; in its charged (deprotonated) form it cannot cross the […]

The upper edge of a gate in a dam runs along the water surface. The gate is 2.00 m high and 4.00 m wide and is hinged along a horizontal line through its center (Fig). Calculate the torque about the hinge arising from the force due to the water. (Hint: […]