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Directions: In this module, we explored the idea of the pH scale and the importance of maintaining the pH of a given environment for the overall functioning of organisms that inhabit that environment. For this discussion, identify one area within your own body, nature, or another organism where maintaining pH is […]

1. Psychological thought has evolved from philosophical inquiry to scientific research. In your own words, describe the value of different perspectives in the field and the need for the subdivisions you read about in Lesson 1. 2. Explain how psychologists use case studies, naturalistic observations, and surveys to observe and […]

The ß-hemoglobin locus in humans is implicated in resistance to falciparum malaria. Estimates of fitness vary geographically, but suppose that, in one particular area with endemic malaria, the relative fitnesses of genotypes involving the alleles A (“normal”), S (sickle) and C are: genotype AA SS CC AS AC SC rel […]

You are studying a particular protein, and find that a mutationchanging an alanine amino acid residue within the interior of the protein to a valine resultsin a loss of protein function. You also find that a second mutation (at a differentlocation in the primary structure) changing a leucine residue to […]