Human genetic variation is the genetic differences both within and among populations. There may be multiple variants of any given gene in the human population (genes), leading to polymorphism. Many genes are not polymorphic, meaning that only a single allele is present in the population: the gene is then said to be fixed.
Expense of the blood glucose test strips. Over time, test strips are often the most expensive part of monitoring your blood sugar, so keep in mind the cost of compatible strips when choosing your glucose monitor. On average, glucose test strips range from 35Â¢ to $1.00 each.
Blood glucose monitors aren't expensive (there are often rebates), and they are easy to use. You use a little pen -- just push the button and it pokes you enough to get a small drop of blood. The test strips ARE ridiculously expensive, however -- as much a $1 per strip.