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प्रश्न
Is extra genomic DNA present in prokaryotes and eukaryotes? If yes, indicate their location in both the types of organisms.
उत्तर
Yes, extra genomic DNA is present in prokaryotes and eukaryotes. In addition to the genomic DNA (the single chromosome/circular DNA), many bacteria (prokaryotes) have small circular DNA outside the genomic DNA. These smaller extra genomic DNA are called plasmids. The plasmid DNA confers certain unique phenotypic characters to such bacteria. One such characteristic is resistance to antibiotics. This plasmid DNA is used to monitor bacterial transformation with foreign DNA. In eukaryotes, extra genomic DNA is present in two organelles- mitochondria and plastids.
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संबंधित प्रश्न
Which of the followings is always ABSENT in prokaryotic cells?
Select one which is not true for ribosome.
Which one of these is not a eukaryote?
Which of the following features is common to prokaryotes and many eukaryotes?
Which of the following is not true of a eukaryotic cell?
What are plasmids? Describe their role in bacteria?
The genomic content of the nucleus is constant for a given species where as the extra chromosomal DNA is found to be variable among the members of a population. Explain.
