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.
-Mitochondria and chloroplast have own DNA that is circular and led scientists to believe that they were separate organisms at one point.-Sequence of that DNA is similar to bacteria-They also have double membranes which shows evidence of being engulfed-New mitochondria and plastids are formed only by a process similar to binary fission