The molecular weight of protein X is 50 thousand daltons (50 kDa). Determine the length of the corresponding gene.

Protein X consists of 50,000: 100 = 500 amino acids.
One of the chains of the gene encoding the X protein must consist of 500 triplets, or 500 x 3 = 1500 ntd.
The length of such a DNA chain is 1500 x 0.34 nm = 510 nm. The same is the length of the gene (double-stranded DNA region).

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