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.
Milligram is a unit of mass; milliliter is a unit of volume. You can't directly convert the two. If you know the density of a substance, you can say, for example, 1 milliliter of water has a mass of 1 gram (1000 milligrams), or 1 milliliter of lead has a mass of about 11 gram.