Explain in depth on a molecular level how the hypotheses pre

Explain in depth on a molecular level, how the hypotheses presented summarizing events leading to the origin of the eukaryotic cell nucleus.

Solution

Serial Endosymbiotic theory explains about the eukaryotic cell evolved from prokaryotes during evolution.
In secondary endosymbiosis archaebacteria engulf by pro-eukaryotes with motile spirochetes and membranous fold. The archebacterium transformed into nucleus, archebacterium membrane fold turns into double
membrane nuclear envelope and the spirochytes forms has microtubules.

In molecular level RNA both uses a same 20 amino acids for protein synthesis and AUG is the start codon for translation. 16s rRna is key in evolutionary studies in both bacteria and eukaryotes. In prokaryotes 16srRNA plays a major role in translation and in eukaryotic mitochondria and chloroplast also contains 16srRna.

In eukaryotic cells microtubles 24nm in diameter in centrosome similar to prokaryotic microtuble present in archaebacteria. Both contains the same tubulin protein molecules. Nuclear pore complex proteins present in nuclear membrane and nucleolus proteins shares the same protein in archea membrane folds.