Regulation of gene expression in prokaryotes and eukaryotes pdf
- how is gene expression controlled in prokaryotes
- how is gene expression regulated in prokaryotes
- how is gene expression regulated in prokaryotes and eukaryotes
- how is gene expression controlled in prokaryotic cells
Regulation of gene expression in prokaryotes and eukaryotes ppt...
Gene Expression In Prokaryotes
The two domains of prokaryotes are Bacteria and Archaea. Both lack a defined nucleus, but they still have a genetic code and nucleic acids.
Although there are no complex chromosomes like those that you would see in eukaryotic cells, prokaryotes have circular pieces of deoxyribonucleic acid (DNA) located in the nucleoid.
However, there is no membrane around the genetic material.
In general, prokaryotes have fewer non-coding sequences in their DNA compared to eukaryotes.
Regulation of gene expression in eukaryotes
This may be due to prokaryotic cells being smaller and having less space for a DNA molecule.
The nucleoid is simply the region where the DNA lives in the prokaryotic cell. It has an irregular shape and can vary in size.
In addition, the nucleoid is attached to the cell membrane.
Prokaryotes can also have circular DNA called _plasmids_. It is possible for them to have one or more plasmids in a cell. During cell division, prokaryotes can go through DNA synthesis and the separation of plasmids.
Compared to the chromosomes in eukaryotes, plasmids tend to be smaller and have less DNA
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- how is gene expression regulated in prokaryotic cells