The area that is today the center of Allentown was laid out as Northampton Town in 1762 by William Allen, a wealthy shipping merchant, former mayor of the city of Philadelphia and then-Chief Justice of the Province of Pennsylvania.
Mitochondria and Chloroplasts are known to have their own DNA and make their own proteins. According to endosymbiosis theory, these organelles were known to have moved into eukaryotic cell in the form of vesicles when they came into contact with prokaryotes. :) Views.
The reason for this is simple â mitochondria contain their own DNA. Mitochondria are the only subcellular organelle that contain DNA outside of the nucleus. They contain a simpler, circular copy of DNA that is transcribed with nuclear DNA in a coordinated symphony when it comes time to synthesize more mitochondria.