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 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. A concrete driveway 90 feet long and ten feet wide would be around $1800 for materials plus an additional $2000 or so for labor, for a total cost of nearly $4000. 2  Asphalt driveway paving costs $2-$6 per square foot installed. 3  For a 500 square foot (50 x 10) driveway this works out to an average cost of $2500.