Historic Downtown Bridgeport. In 2006 Bridgeport was named a Texas Main Street City and has been recognized as a National Main Street City since 2007. This prestigious recognition shows that the City and its residents are committed to preserving our historic business district, both architecturally and economically.
The cell nucleus contains the majority of the cell's genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes. Each human cell contains roughly two meters of DNA.
Mitochondrial Heteroplasmy and Disease. Abstract. In addition to the nuclear genome, most eukaryotic cells also have multiple copies of a small circular genome located within the mitochondrion (mtDNA), the presence of which is critical for cellular respiration. All the mtDNA within the cells of young individuals is usually thought to be identical, a condition known as homoplasmy.