Definition. Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease even though the matching gene from the other parent is normal.The abnormal gene dominates.efinition. Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease even though the matching gene from the other parent is normal.
Savant syndrome is a rare syndrome in which people with poor mental development or brain injury possess extraordinary mental skills which are difficult to explain scientifically. Sometimes the talents of a savant may go unnoticed.he exact cause of a savant syndrome is not known. A lot of hypotheses have been proposed. Some researchers believe that there is damage to the left hemisphere of brain, which results in compensatory changes in the right side of brain.
Savant was listed in the Guinness Book of World Records under Highest IQ from 1986 to 1989 and entered the Guinness Book of World Records Hall of Fame in 1988. Guinness retired the Highest IQ category in 1990 after concluding IQ tests were too unreliable to designate a single record holder.arilyn vos Savant was born Marilyn Mach in St. Louis, Missouri to parentsâJoseph Mach and Marina vos Savant. Savant says one should keep premarital surnames, with sons taking their fathersâ and daughters their mothersâ.