Thekey difference在原核和真核DNA之间是原核DNA自由浮动细胞质while the eukaryotic DNA situates inside thenucleus。
There are two major categories of living organisms such as prokaryotes and eukaryotes. They differ from each other by their cellular organization. Accordingly, prokaryotes have a simple cellular organization. They lack a nucleus and membrane-bound organelles. On the other hand, eukaryotes have a complex cellular organization. They have a true nucleus that contains DNA and also membrane-bound cell organelles. All the prokaryotes are unicellular while eukaryotes may be unicellular or multicellular organisms. Prokaryotes and eukaryotes mainly contain DNA genomes. Their DNA is packaged into chromosomes. Since prokaryotes do not have a nucleus, their DNA freely floats in the cytoplasm. However, in eukaryotes, chromosomes situate inside the nucleus. Hence, nuclear membrane encloses all eukaryotic DNA.
1.Overview and Key Difference
3.What is Eukaryotic DNA
4.Similarities Between Prokaryotic and Eukaryotic DNA
5.并排比较 - 原核与表格形式的真核DNA
There are two main groups of prokaryotes such as bacteria and archaea. They are unicellular tiny organisms. Both these categories have a single chromosome as their genome. Thus, it is mostly a DNA genome. This single chromosome is a circular chromosome made up of double-stranded DNA.
What is Eukaryotic DNA?
Eukaryotes have a true nucleus that encloses with a nuclear membrane. Hence, eukaryotic DNA resides inside the nucleus by enclosing the nuclear membrane. However, some non-genomic eukaryotic DNAs are found outside the nucleus, within two types of cell organelles. They arechloroplasts and mitochondria。与原核DNA不同，真核DNA包含许多无编码的重复DNA。
Furthermore, eukaryotic DNA contains introns other than exons. Therefore, the amount of eukaryotic DNA per cell is very high compared to the amount of prokaryotic DNA. Not only that, eukaryotic DNA folds with histone proteins and packages into several chromosomes. Hence, eukaryotes contain more than one chromosome, unlike prokaryotes. The human genome contains a total of 46 chromosomes. Generally, eukaryotes do not have plasmid DNA. But several types of eukaryotes have plasmid DNA.
What are the Similarities Between Prokaryotic and Eukaryotic DNA?
- Furthermore, both types of DNA contain genetic codes/information for the synthesis of proteins.
What is the Difference Between Prokaryotic and Eukaryotic DNA?
Prokaryotic DNA is present in the cytoplasm while the eukaryotic DNA is present inside the nucleus. Thus, this is the key difference between prokaryotic and eukaryotic DNA. Furthermore, prokaryotes have only one chromosome while eukaryotes have more than one chromosome.
Moreover, another difference between prokaryotic and eukaryotic DNA is that the prokaryotic DNA contains less number of genes than the eukaryotic DNA. Also, a further difference between prokaryotic and eukaryotic DNA is that the prokaryotic DNA does not contain repetitive DNA and introns while eukaryotic DNA contains a lot of repetitive DNA and introns. Additionally, the amount of prokaryotic DNA is small compared to the amount of eukaryotic DNA. Therefore, it is also a difference between prokaryotic and eukaryotic DNA.
The below infographic presents more details of the difference between prokaryotic and eukaryotic DNA.
总结- - - - - -Prokaryotic vs Eukaryotic DNA
1.”Plasmid (english)”By User:Spaully on English wikipedia – Own work,(CC BY-SA 2.5)viaCommons Wikimedia
2.”Eukaryote DNA”By Magnus Manske and LadyofHats (Mariana Ruiz)(CC BY-SA 3.0)viaCommons Wikimedia