Genetic mapping of bovine mitochondrial DNA from a single animal.

Using a physical map of bovine mitochondrial DNA derived from the liver of a single Holstein cow, we have determined the location of the genes specifying the large and small ribosomal RNAs by hybridization analysis and electron microscopic observations of R-loop forms. Also, the position of the origin of DNA replication (D-loop) has been located by electron microscopy. Additionally, the direction of D-loop expansion and the polarity of the large and small ribosomal RNA genes were determined.