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.
One milliliter (British spelling: millilitre) (ml) is 1/1000 of a liter and is a unit of volume. 1 milligram (mg) is 1/1000 of a gram and is a unit of mass/weight. This means that we require an extra piece of information in order to be able to convert the measurement across.