If the distance between two consecutive base pairs is $0.34$ nm and the total number of base pairs of a DNA do

Question

If the distance between two consecutive base pairs is $0.34$ nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6 	imes 10^9$ bp, then the length of the DNA is approximately

Accepted Answer

Length of DNA = $[0.34 	imes 10^{-9}] 	ext{m} 	imes 6.6 	imes 10^9 	ext{bp} = 2.2 	ext{m}$. Distance between 2 base pair in DNA helix = $0.34 	ext{nm} = 0.34 	imes 10^{-9} 	ext{m}$. Total number of base pair = $6.6 	imes 10^9 	ext{bp}$.

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