A single elevated ESR, without any symptoms of a specific disease, will usually not give enough information to make a medical decision. Furthermore, a normal result does not rule out inflammation or disease. Moderately elevated ESR occurs with inflammation but also with anemia, infection, pregnancy, and with aging.
Between 65 and 81 percent of people can curl their tongues, and slightly more women than men can do it, studies find. The notion that a person's ability to roll his or her tongue is determined by a single dominant gene stems from a paper published in 1940 by geneticist Alfred Sturtevant.
The tongue-rolling version is dominant over the one that doesn't let you roll your tongue. This is what dominant means -- one of the versions trumps the other.. Well, it's not quite that simple. There are many examples of parents who can't roll their tongues having tongue-rolling children. And the little bit of hard research that has been done on the topic clearly shows that tongue rolling is not a simple dominant trait.