The hypothesis by Coleman was that the product of the ob+ gene was the appetite suppressing hormone. Hence, the homozygous ob/ob mutant are in a position to synthesize that hormone, and its circulating level would be zero. He also hypothesized that the product of the db+ gene was the receptor for the appetite-suppressing hormone. Thus, the homozygous db/db mutant would be able to synthesize the hormone but would not be in a position to respond to it. It would eat excessively and produce large amounts of body fat, which in turn would produce large amounts of appetite-suppressing hormone . In the absence of a receptor, the db/db mutant's hormone level would remain abnormally high.
Coleman's hypothesis were confirmed when the precise functions of the ob+ and db+ genes were determined. The peptide hormone encoded by the ob+ gene was named Leptin.
<span>Studying the gross anatomy of a cadaver can show an individual the total physiology of a human. By dissecting a cadaver or deceased human, you can study the nervous and cardiovascular system as well as the organs and other internal tissues. For example, muscle origin and insertions on bone, blood supply to the muscle and nervous stimulation of the muscle can be studied. Other areas that can be seen are the location of major organs in the thorax and the blood supply to each of them. The discovery of how the cadaver died can also bee seen during the dissection in many cases.</span>
It's A. Primary succession :) because Human economics and ecology are linked together because human economics utilizes the ecosystem and the natural resources in older for economics to actually exist. :)))))))
