how do current hypotheses about the evolution of eukaryotes

how do current hypotheses about the evolution of eukaryotes explain the origin of linear chromosomes in eukaryotic cells?

Question 4 options:

A prokaryotic cell was engulfed by another cell and replication errors created linear chromosomes.

A prokaryotic cell was engulfed by another cell and altered its DNA to be linear.

Neither hypothesis offers an explanation for the origin of linear chromosomes.

A prokaryotic cell was engulfed by another cell and their fused circular chromosomes became linear.

Solution

A prokaryotic cell was engulfed by another cell and replication errors created linear chromosomes.

It has been hypothesized that the repetitive capture of non-LTR retrotransposons, with a G/C strand bias, at the ends of DNA double-strand breaks (DSBs) could have eventually resulted in end protection (capping), instead of repair, giving rise to the “proto-telomeres” of the first linear chromosomes