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.
On the likelihood that you do hire a pro, installation costs for a concrete slab average $65.50 per hour. If you have a poor foundation or are working on a slope, the overall cost can go up.n the likelihood that you do hire a pro, installation costs for a concrete slab average $65.50 per hour. If you have a poor foundation or are working on a slope, the overall cost can go up.