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â¢ Mitochondrial DNA is found inside the mitochondria while nuclear DNA is found inside the nucleus of a cell. â¢ One cell contains approximately 99.75% of nuclear DNA and 0.25% of mitochondrial DNA.â¢ The mutation rate of mitochondrial DNA is nearly twenty times faster than that of nuclear DNA.he uniqueness of mitochondrial DNA is that it is maternally inherited as a linked set of genes, passed on to progeny in the cytoplasm of the egg cell; thus no recombination between maternal and paternal genomes occurs.
A defined nucleus that holds the genetic code is an advanced feature in a cell. The things that make a eukaryotic cell are a defined nucleus and other organelles. The nuclear envelope surrounds the nucleus and all of its contents. The nuclear envelope is a membrane similar to the cell membrane around the whole cell. There are pores and spaces for RNA and proteins to pass through while the nuclear envelope keeps all of the chromatin and nucleolus inside. When the cell is in a resting state there is something called chromatin in the nucleus. Chromatin is made of DNA, RNA, and nuclear proteins. DNA and RNA are the nucleic acids inside of the cell. When the cell is going to divide, the chromatin becomes very compact.