What Is the Origin of Chloroplasts? Like mitochondria, chloroplasts likely originated from an ancient symbiosis, in this case when a nucleated cell engulfed a photosynthetic prokaryote.

Both mitochondria and chloroplast have their own DNA, which by then was known to contain the hereditary material of organisms. Mitochondrial DNA has a simple circular structure, which is ...

Scientific consensus is that this happened twice over the course of evolution, resulting in the energy-generating organelles known as mitochondria ... differences could offer insight into ...