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How many base pairs (bp) are found in the haploid genome of humans?

1. 2.9 × 10⁹
2. 4 × 10⁸
3. 7 × 10⁹
4. 3 × 10⁹

Correct answer: 3 × 10⁹

Solution

A haploid human genome contains one complete set of chromosomes, which is approximately 3 × 10⁹ base pairs. The diploid genome would be about twice that amount, so the haploid value is the smaller, standard estimate.

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