What Is capture hypothesis?

The capture hypothesis proposes that organelles such as mitochondria and chloroplasts were once free-living prokaryotic cells that were engulfed by a large primitive eukaryotic cell and formed a symbiotic relationship. Over time, these engulfed cells evolved into integral parts of the eukaryotic cell, contributing to their specialized functions. This theory is supported by the presence of double membranes and remnants of bacterial DNA in these organelles.