The Hardy-Weinberg principle is not generally found in nature because it requires certain conditions in an environment. These conditions are the absence of the things that can cause evolution. In other words, if no mechanisms of evolution are acting on a population, evolution will not occur--the gene pool frequencies will remain unchanged.
Gum disease is a very common condition where the gums become swollen, sore or infected. The gums tend to bleed after you brush or floss your teeth, and the blood in your mouth causes the metallic taste. If left untreated, the tissues and bone that support the teeth can also become affected (known as periodontitis).
Â· just now. 1  Mouth Tastes Like Metal. Source(s): https://shrinks.im/a73mA. 2  Metallic Taste. Source(s): https://shrink.im/a8p8O. 3  Sometimes an iron or metal taste in your mouth can be caused by vitamins . . . are you taking a vitamin that is rich in Iron . . . this can do it. Take the vitamin with a glass of milk or look for a multiple vitamin that is NOT iron enriched. Also, sometimes blood can have that taste -- is there a sore in your mouth that could be causing this?