The psychic is, quite literally, the new kid on the block as far a psychics go; his name is Tyler Henry, and apparently the basic cable channel E! is really pushing a TV series featuring him, Hollywood Medium With Tyler Henry. His website describes him thusly:
Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants, in the chloroplast. In humans, the 16,600 base pairs of mitochondrial DNA encode for only 37 genes.
Mitochondrial DNA only has one chromosome, and this is organized like a circular genome (similar to most prokaryotic DNA). This single chromosome is much shorter, and codes for the specific proteins which are used in the metabolic processes mitochondria undertake (i.e., fatty acid metabolism, citrate acid cycle, ATP synthesis).