Creation 101: Genetics

Genetics is the science of heredity: the study of how traits are passed on from organisms to their descendants. It is perhaps the most relevant field of science to the issue of creation and evolution. Which position on origins is most consistent with our modern understanding of genetics? Do all organisms on earth share a common ancestor as Charles Darwin believed? Or do all organisms trace back to a large number of separately created kinds which are not biologically related to other kinds? Can the science of genetics shed light on these questions?