Answer:
Keiko should mark the mitochondria and chloroplast
Explanation:
The theory of endosymbiosis explains that the eukaryotic life on earth exists because, in the past, the eukaryotic organelles existed as prokaryotic cells. With the passage of time, these prokaryotic cells were engulfed by the larger prokaryotes which gave rise to the eukaryotes. The organelles which support the theory of endosymbiosis are mitochondria and chloroplasts. Both these organelles have their own DNA which is able to synthesize mRNA and proteins.
