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Discuss with your teacher and find out h...

Discuss with your teacher and find out how to distinguish between the following:
(a) plasmid DNA and Chromosomal DNA
(b) RNA and DNA
( c) Exonuclease and Endonuclease.

Text Solution

Verified by Experts

Plasmid DNA and Chromosomal DNA : Plasmid DNA is a small double stranded circular DNA present in some bacteria. They carry genes for drug resistance, `N_(2)` fixation and fertility. The chromosomal DNA is much larger in size and carries genes for other traits of the cell.
RNA and DNA : RNA is a single stranded polymer of ribonucleotides, which contain ribose sugar and adenine, guanine cytosinc and urncil nitrogenous bases, whereas DNA is a double stranded polymer of deoxyribo-nucleotides containing deoxyrlbose sugar and adenine, guanine, cytosine and thymine nitrogenous bases.
Exonuclease and Endonuclease : Exonucleases remove nucleotides from the ends of DNA, whereas endonucleases make cuts at specific positions within the DNA.
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Knowledge Check

  • Which of the following base is found only in RNA and not in DNA ?

    A
    Uracil
    B
    Thymine
    C
    Guanine
    D
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