Answer:
Nuclear DNA is bundled up in linear strands.
Step-by-step explanation:
The endosymbiotic theory, popularized by Lynn Margulis in 1981, postulates that mitochondria and plastids, such as chloroplast, originated from small prokaryote organisms that came to live within other larger organisms in a symbiosis relationship.
In this kind of relationship, one organism lives in close association with the other. In endosymbiosis, a smaller organism, called a symbiont, lives within a larger organism, the host, in a mutually beneficial relationship.
As evidence of this theory we can cite:
- Mitochondria have their own circular DNA genome.
- Bacterial DNA is capable of directing protein synthesis and enzyme production.
- Mitochondria are more closely related to bacterial cells than the eukaryotic cells in which they reside.