Purpose: The incidence of 22q11.2 deletion syndrome is approximately 1 in 5,000 births, and accounts for 5–30% of all heart defects, making it one of the more common genetic conditions in the ...

Chromosomes are tightly coiled structures in each of your cells that contain DNA, the code for all life. DNA is organized in segments on chromosomes called genes. Humans typically have 46 chromosomes ...