Final answer:
Chloroplasts and mitochondria have unique inheritance patterns due to their separate DNA, which is similar to bacterial DNA and differs from the DNA in the nucleus. The organelle DNA is short and circular, and the membranes of the organelles resemble those found in prokaryotes.
Step-by-step explanation:
Chloroplasts and mitochondria have unique inheritance patterns because they contain their own DNA that is separate from the DNA found in the cell nucleus. This DNA is similar to the circular DNA of bacteria, and it does not match the DNA sequences found in the nucleus. Additionally, the organelle DNA is short and circular, and the molecules that make up the organelle membranes resemble those in prokaryotic membranes. These differences contribute to the non-typical inheritance patterns observed in mitochondria and chloroplasts.