Similarities:
1) Both eukaryotes and prokaryotes require the unwinding of double-stranded DNA before translation can take place.
2) For both eukaryotes and prokaryotes, RNA processing is necessary before translation can take place.
Differences:
1) m RNAS of prokaryotes have an Shine-Dalgarno sequence (SD) located 8–10 nt upstream of the start codon (usually AUG).
Eukaryotes does not require the Shine-Dalgarno sequence rather the eukaryotic initiation complex recognizes the 7-methylguanosine cap at the 5′ end of the mRNA.
2) In Prokaryotes, Initiation is promoted by initiation factors IF1, IF2, and IF3
Pre initiation complex in Eukaryotes is initiator t RNA +GTP+ eIF2+40S ribosomal subunit