Every person carries thousands of genes.
Genes are the individual chemical instructions which tell our bodies how to work or how to develop. Each person has 23 pairs of chromosomes inside of every one of the cells which make up our bodies. In order to study how an individual inherits genetic traits or diseases from his or her parents, it is valuable to discover which chromosome specific genes are located on. Researchers have developed laboratory techniques which will allow us to find the chromosomal location of the gene which causes , a genetic disease which has occurred in your family. The amount of blood to be drawn will be determined by the person's age, height and weight.