ProkaryotesEukaryotesDNADNA is nakes (no histones)DNA associated with histonesDNA is circularDNA is linearGenes do not contain intronsGenes may contain intronsDNA found in cytoplasm (nucleoid)DNA found in nucleusInternal StructuresNo membrane−bound organellesHave membrane−bound organellesRibosomesHave 70S ribosomesHave 80S ribosomesReproductionAsexual (binary fission)Asexual (mitosis) or sexual (meiosis)DNA is singular (haploid)DNA is usually paired (diploid or more)Average SizeSmaller (−1−5 μm)Larger (−10−100μm)