Somatic cells are also referred to as adult stem cells. These cells make up organ, skin, bone, blood, and connective tissues. Sperm and egg cells are not somatic cells. 

These cells can become any or most of the cells in the tissue in which it is found. These cells are self-renewing. 

Somatic cells contain two sets of chromosomes, one from each parent. Mutations in these cells can affect the individual but are not passed to offspring.