The eukaryotic nucleus likely originated from a(n)
A) mitochondrion.
B) archaeal cell.
C) bacterium.
D) proteobacterium.

Question

Quizplus · Accepted Answer

The current leading hypothesis is that the nucleus evolved from an invagination or infolding of the cell membrane in a primitive archaeal ancestor. This primitive archaeal ancestor eventually formed a symbiotic relationship with an alpha-proteobacterium, which gave rise to mitochondria.

The Eukaryotic Nucleus Likely Originated from A(n)