1. Tardigrade
  2. Question
  3. Biology
  4. If the distance between two consecutive base pairs is 0.34nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately:

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

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

NEETNEET 2020Molecular Basis of Inheritance

Solution:

Length of DNA = Number of base pairs $\times 0.34\, nm$
$= 6.6 \times 10^9 \times 0.34 \,nm$
$= 6.6 \times 10^9 \times 0.34 \times 10^{-9} m$
$= 2.2 \,m$