Gem hunting is a geological lottery and all the way through olden times, we have heard about humans adorning themselves with jewelry. During the primitive times, it was first made from bits of bone, shell and gleaming rocks.Soon after, it was with precious stones and gems set on silver, copper and gold.Knowing about the different types of precious stone and equipping yourself with information related to it means something great, for the reason that, they are rich in knowledge, diverse in their character and yet unique in all means.em hunting is a geological lottery and all the way through olden times, we have heard about humans adorning themselves with jewelry. During the primitive times, it was first made from bits of bone, shell and gleaming rocks.
Tay-Sachs Disease. Tay-Sachs disease (the most severe form of Hexosaminidase A deficiency) is a progressive, fatal genetic condition that affects the nerve cells in the brain.
Individuals with Tay-Sachs Disease lack an enzyme called hexosaminidase (Hex A). The child loses all motor skills and becomes blind, deaf and unresponsive. Death usually occurs by the age of four. The carrier rate in the Ashkenazi Jewish population is approximately 1 in 25. More rare than the infantile type is Late Onset Tay-Sachs Disease, where the progression of symptoms is slower and milder.