What are the pros and cons of genetic testing?

Molecular genetic: testing & a Fragile X Syndrome probe are recommended for people of any age with developmental delays, Intellectual Disability &/or Autistic Spectrum Disorder. People at risk of transmitting mutant genes because of ethnicity, family history or consanguity need pre-pregnancy testing. Chromosomal array on amniotic fluid is offered to women with high risk of fetal Down Syndrome & other aneuploidies.