Prader-Willi syndrome is caused by a missing gene on chromosome 15. Normally, parents each pass down a copy of this chromosome. The defect can occur in a couple of ways: The father's genes are missing on chromosome 15; There are defects or problems with the fatherâs genes on chromosome 15
poison meaning, definition, what is poison: a substance that can make people or animals ill or kill them if they eat or drink it: . Learn more.
POISON, crim. law. Those substances which, when applied to the organs of the body, are capable of altering or destroying, in a majority of cases, some or all of the functions necessary to life, are called poisons. 3 Fodere, Traite de Med.