Genetic Chimerism is an organism or tissue that contains at least two different sets of DNA, most often originating from the fusion of as many different zygotes. These are distinguished from mosaics, organisms that contain genetically different populations of cells originating from a single zygote, and from hybrids, organisms containing genetically identical populations of cells originating from a cross of two different species. Normally, genetic chimerism is not visible on casual inspection; however, it has been detected in the course of proving parentage.
Genetic Chimerism
