Williams syndrome is the result of a deletion of the 7q11.23 region of chromosome #7 containing the elastin gene and is believed to be a contiguous gene syndrome. Diagnosis of Williams syndrome is confirmed by dual colour FISH using a specific probe and a control probe.
Exert is defined as to put forth or into use with great energy. An example of exert is to put lots of energy into exercising. YourDictionary definition and usage example. exert. to put forth or use energetically; put into action or use: to exert strength, influence, etc. to apply (oneself) with great energy or straining effort Origin of exert
Strain is defined as to exert or stretch to the maximum or to injure by too much exertion. 1  An example of strain is for a spectator to stretch over his seat to see a concert.  An example of strain is for a football player to pull a muscle from playing too roughly.