This intricate packaging allows meters of DNA to fit comfortably inside the microscopic nucleus. Plasmids: Extra Genetic Elements Beyond the main chromosome, many bacteria also contain smaller, circular pieces of DNA called plasmids.
How Viral DNA Integrates Into Its Host Cell
They contain their own mitochondrial DNA, which is inherited almost exclusively from the mother. Understanding where this vital molecule resides is the first step to grasping the basics of biology.
Exceptions to the Rule: Organelles with Their Own DNA While the nucleus houses the majority of genetic material, it is not the only place where DNA exists in a eukaryotic cell. Unlike eukaryotic chromosomes, the bacterial chromosome is typically a single, circular DNA molecule that floats freely in the cytoplasm.
How Viral DNA Integrates Into a Host Cell's Genetic Material
Chloroplasts: Found only in plant and algal cells, these organelles perform photosynthesis. Every living organism, from the simplest bacterium to the most complex mammal, relies on a fundamental instruction manual encoded within its cells.
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