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If the distance between two consecutive ...

If the distance between two consecutive base pairs is 0.34nm and the toal number of base pairs of a DNA double helix in a typical mammalian cell is `6,6xx10^9`bp, then the length of the DNA is approximately

A

2.5 meters

B

2.2 meters

C

2.7 meters

D

2.0 meters

Text Solution

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The correct Answer is:
B
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The distance between two consecutive base pairs is 0.34 * 10^-9 m , what will be the length of DNA double helix in a typical mammalian cell?

In an experiment, DNA is treated with the compound which tends to place itself amongst the stacks of nitrogenous base pairs. As a result of this, the distance between two consecutive base increases.From 0.34-0.44nm, calculate the length of DNA double helix (Which has 2x10^(9)bp) in the presence of saturating of this compound.

Knowledge Check

  • The distance between two consecutive base pairs in DNA is

    A
    `0.34 times 10^(-9)m`
    B
    `3.4 times 10^(-9) m`
    C
    `34 times 10^(-9)m`
    D
    `34 times 10^(-6)m`

  • If the distance between two consecutive base pairs is 0.34 nm then the length of DNA for a human diploid cell is

    A
    `6.6 xx 10^9 m`
    B
    `6.6 xx 10^9 bp x 0.34 m`
    C
    `2.2 metres`
    D
    `6.6 xx 10^-9 m`

  • The distance between two base - pairs in DNA is :

    A
    `34 Å`
    B
    `3.4 Å`
    C
    `0.34 Å`
    D
    `20 Å`

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