The issues begin with the clean and adjust service. A word to the wise: NEVER accept this service. This is just an easy revenue builder for the repair business that provides little to no benefit. Rear brakes are self-adjusting; when you back up and then brake, the brakes adjust outward. So the extent of this service is removing the brake drum, spraying a brake cleaning agent on the brakes and hardware to remove any brake dust buildup, and return the drum to its original position.
The most common form of Down syndrome is known as Trisomy 21, a condition where individuals have 47 chromosomes in each cell instead of 46. This is caused by an error in cell division called nondisjunction, which leaves a sperm or egg cell with an extra copy of chromosome 21 before or at conception. Trisomy 21 accounts for 95% of Down syndrome cases, with 88% originating from nondisjunction of the mother's egg cell.
Trisomy 21â More than 90% of Down syndrome cases are caused by trisomy 21. An extra chromosome (chromosome 21) originates in the development of either the sperm or the egg. When the egg and the sperm unite to form the fertilized egg, three (rather than two) chromosomes 21 are present.