How DNA in a prokaryote different from DNA in a eukaryote?

Prokaryotic cells:


Most primitive, earliest form of life
Do not have a pre-defined nucleus
Chromosomes are dispersed in the cytoplasm
Contain no membrane-bound organelles
Have circular chromosomes and lack histone proteins
Most metabolically diverse
Small - typically 0.2-2.0 micrometers in diameter
Have a primitive cytosketetal structures or don't have a cytoskeleton at all
Smaller (70S) ribosomes
Don't undergo meiosis but reproduce sexually by the transfer of DNA fragments through conjugation



Eukaryotic cells:
More complex, evolved organsims
Contain true nuclei in which chromosomes are compacted as chromatin
Contain membrane-boundorganelles
Have linear DNA and contain histone proteins
Larger - typically 10-100 micrometers in diameter
Have a complex cytosketeton
Larger (80S) ribosom
Reproduce sexually with the use of meiosis

Pro - Single DNA present.
Euk - Organelles also have their own DNA.

Pro - It is short, simple and codes for few proteins.
Euk - It is complex, longer and codes for large number of proteins.

Pro - Not enclosed in nuclear envelope.
Euk - DNA is enclosed in nuclear envelope.

Pro - Circular DNA is present.
Euk - Linear strand of DNA is present.

Pro - DNA is not associated with proteins.
Euk - DNA proteins are present.

Pro - DNA replication starts at one point.
Euk - DNA replication starts at multiple origins.

Pro - Leaky genes are present on DNA.
Euk - Methylation checks the leakage of genes in eukaryotes.

Go with Alone Guy's list, but add this one:

Pro:  Most DNA is coding or regulatory
Euk:  Most DNA has no known function and is probably junk