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Molecular weight of chromosome of yeast cell is

1. 2.56 × 10⁹
2. 40 × 10⁹
3. 0.5 × 10⁹
4. 1 × 10⁹

Correct answer: 2.56 × 10⁹

Solution

A yeast chromosome contains about 3.9 × 10^6 base pairs, and each base pair has an average molecular weight of roughly 660 daltons. Multiplying gives about 2.56 × 10^9, matching the correct option.

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