1.

Circular DNAs are negatively supercoiled.(a) True(b) FalseThe question was posed to me in an interview.My enquiry is from Genome Structure topic in portion Nature of Genome of Cell Biology

Answer»

The correct choice is (a) True

The BEST I can EXPLAIN: Circular DNAs extant in nature include mitochondrial, BACTERIAL and viral DNA. These are invariably negatively supercoiled i.e. underwound. An underwound DNA has greater number of BASEPAIRS PER turn of the helix.



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