Question

The theory that eukaryotes further evolved from a mutually beneficial relationship between the primitive eukaryotes and the prokaryotes it engulfed

Answer 1

The endosymbiotic theory proposes that eukaryotes evolved from a mutually beneficial relationship between primitive eukaryotic cells and prokaryotic cells they engulfed. Smaller prokaryotic cells called endosymbionts were engulfed by larger prokaryotic cells, eventually becoming organelles such as mitochondria and chloroplasts. This theory is widely accepted and supported by evidence.

Step-by-step explanation:

The endosymbiotic theory suggests that eukaryotes evolved from a mutually beneficial relationship between primitive eukaryotic cells and prokaryotic cells they engulfed. According to this theory, smaller prokaryotic cells, known as endosymbionts, were engulfed by larger prokaryotic cells, providing them with a safe home and nutrients. Over time, the endosymbionts evolved into organelles of the host cells, such as mitochondria and chloroplasts. This theory is widely accepted and is supported by evidence such as the presence of DNA in mitochondria and the similarities between eukaryotic genes and those found in prokaryotes.