All other polonium isotopes are short-lived except polonium-210 (half-life about 138 days), which is the most commonly used isotope. It is prepared by bombarding bismuth with neutrons in a nuclear reactor.olonium has 34 isotopes, more than any other element. All of these isotopes are radioactive. The most stable, polonium-209, has a half-life of about 103 years. Polonium-208 (half-life about 3 years) is the only other polonium isotope with a half-life over one year.
Ashkenazi Jewish genetic diseases are a group of rare disorders that occur more often in people of Eastern European (Ashkenazi) Jewish heritage than in the general population.
1 Ashkenazi Jews have a higher carrier frequency for Tay-Sachs and 16 other genetic diseases. 2  The Ashkenazi panel was developed to screen for all these disorders with one blood test. ( 3 90% of American Jews are Ashkenazi.).ystic Fibrosis, Spinal Muscular Atrophy and Fragile X syndrome are three genetic disorders that occur more frequently in the general population. It is recommended that carrier screening for these disorders be offered to all prospective parents.