Genetic researchers are interested in how genes affect the way the authors' bodies work, and they often use blood or saliva samples to look at DNA.
What is genetic research? Genes are part of every cell in every person. Genes come in pairs and are made of DNA. Genes carry instructions that tell the body how to grow and develop. We share some genes with our blood relatives. Genetic researchers often use blood or saliva samples to look at DNA. Genetic researchers are interested in how genes affect the way our bodies work.