Detailed Explanation:

Chloroplasts are semi-autonomous organelles capable of self-replication because they contain their own genetic material – both circular DNA (similar to prokaryotes) and RNA (including ribosomal RNA, transfer RNA, and messenger RNA).

The presence of both DNA and RNA enables chloroplasts to synthesize their own proteins and replicate independently within the cell, a characteristic shared with mitochondria that supports the endosymbiotic theory of their evolutionary origin.