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 × 10^9 bp, then the length of the DNA is approximately:
2.5 meters
2.2 meters
2.7 meters
2.0 meters
According to the text, the length of the DNA double helix is calculated by multiplying the total number of base pairs by the distance between two consecutive base pairs. For a typical mammalian cell with bp, the calculation is , which equals approximately 2.2 meters .
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