The changes that cause Prader-Willi syndrome occur on the pair known as chromosome 15. The 23rd chromosome pair is designated as the sex chromosome pair This pair determines the babyâs sex: XX for a girl, XY for a boy.
(In the metric system, a milligram is a unit of weight equal to one-thousandth of a gram, and a deciliter is a unit of volume equal to one-tenth of a liter.) Muscular young or middle-aged adults may have more creatinine in their blood than the norm for the general population.
A gram (g) is the basic unit of measurement of mass used in the metric system. Nanograms (ng) and milligrams (mg) are both units of grams. Nano means one-billionth. Therefore, a nanogram is a billionth of a gram. Milli means one-thousandth. Therefore a milligram is a thousandth of a gram. One milligram is equal to one million nanograms. T