Part 1 of Essay
is a genetic condition involving an extra chromosome, this change occurs around the time of conception. A person with has forty-seven chromosomes instead of the usual forty-six. A relatively common genetic disorder, Down's strikes 1 out of 600 babies. In 95 percent of all cases, the disorder originates with the egg, no ....

Part 2 of Essay
.... defects at birth. The average life expectancy for all others is now beyond age 55 years. *Today less than 5% of persons with Down syndrome have severe-to- profound mental retardation. The majority are on the border of mild-to-moderate mental retardation, and some are exhibiting normal IQ scores today. *The average reading level for persons with Down syndrome is 3rd grade, with many reading at 6th-12th grade levels today. *The vast majority of adults with Down syndrome today can be expected to live semi- or to ....