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Q.
The length o f DNA in a human cell is about
Molecular Basis of Inheritance
Solution:
The length of DNA in a human cell is about $2.2 \,m$.
It can be calculated as
The distance between two consecutive base pairs
$=0.34 \,nm$ or $0.34 \times 10^{-9} \,m$
If the length of DNA double helix in a typical mammalian cell
$=$ The total number of bp $\times$ Distance between two consecutive bp
$=6.6 \times 10^{9}\, bp \times 0.34 \times 10^{-9} m / bp =2.2 \,m$