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1. What were the problems in the Pacific halibut fishery, and how were they resolved? 2. Under what conditions will a natural area receive protection? 3. Compare the concept of ecosystem capital with that of natural resources. What do the two reveal about values? 4. Compare and contrast the terms […]

Q1. Richard Neis had symptoms of excessive secretion of PTH (high blood calcium levels), and his physicians were certain he had a parathyroid gland tumour. So far while surgery was performed on his neck, the surgeon might not find the parathyroid glands at all. Where should the surgeon look next […]

Invent and describe two additional selective hypotheses for the relative hairlessness of humans. You must describe how each of your hypotheses explain the reduced amount of hair; i.e., what causes an increase in fitness for individuals with less hair than others. Now you have 4 hypotheses (+ a non-selective one […]

In Drosophila, vestigial (partially formed) wings (vg) are recessive to normal long wings (vg+) and the gene for this trait is autosomal. The gene for the white-eye trait is on the X chromosome. Suppose a homozygous white-eyed, long-winged female fly is crossed with a homozygous red-eyed, vestigial winged male. a. […]