Question

what is the significance of mitochondria and chloroplasts having their own dna and being surrounded by their own double membrane? it allows them to constantly divide. it suggests their prokaryotic origin. it prevents them from reproducing.

Explanation:

The endosymbiotic theory suggests that mitochondria and chloroplasts were once free - living prokaryotes. Their own DNA and double - membrane structure support this theory. Prokaryotes have their own DNA and some have double - membrane - like structures (e.g., some bacteria have an outer membrane). The double - membrane could be from the engulfing process (the outer membrane from the host cell and the inner from the prokaryote). Having their own DNA is similar to prokaryotes which also have their own genetic material for basic functions.

Answer:

It suggests their prokaryotic origin.