Like trisomy 21, mosaic Down syndrome is not inherited. It occurs as a random event during cell division early in fetal development. As a result, some of the body's cells have the usual two copies of chromosome 21, and other cells have three copies of this chromosome.
1 An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. 2  Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot.3  One homeowner paid $11,000 for a crawl space for a 1,500 square foot home. An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. 2  Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot.
1 A brick driveway starts at around $1.50 per brick plus the cost of installation. 2  For a longer driveway which may need as much as 20,000 bricks, the cost of materials alone could be $20-$30,000, plus $10-$30 per square foot for labor. The cost of pouring a concrete driveway depends on the quality of the concrete. 2  For basic, construction-grade concrete the cost will be somewhere around $5-$10 per square foot. 3  Stamped concrete can cost as little as $8 per square foot for colored concrete and $15+ for an elaborate design.