Question

One of the main features of a eukaryotic cell is the nucleus. Recent evidence suggests that the cell nucleus may have evolved from archaeal ancestors and that the organelles may have evolved from bacterial ancestors, but there is another important factor that shaped the evolution of nuclear genomes. Which of the following is a source of the eukaryotic nuclear genes?

Answer 1

Eukaryotic nuclear genes are believed to have originated from a fusion of archaeal and bacterial organisms through endosymbiotic events.

Step-by-step explanation:

The source of eukaryotic nuclear genes is believed to be a combination of Archaea and Bacteria through endosymbiotic events. The nuclear genes are thought to have originated from an archaean ancestor with a cytoskeleton and the ability to divide its chromosomes mitotically. This archaean ancestor likely fused with a bacterial organism, resulting in the evolution of eukaryotic cells.