9) It is known that the distance between nucleotides in DNA strands is 34 × 10-11m. How long is the 287 amino acid hemoglobin gene?
Ans. Distance between nucleotides in DNA strands is 34 × 10-11m
We know that 1 amino acid is made up of 1 codon.
1 codon is made up of 3 nucleotide bases.
Thus, if we have 287 amino acids then, number of nucleotides will be: 287 *3= 861
Now since its already mention that distance between 2 nucleotides in DNA strand is 34 * 10-11m
Hence the distance or length of 287 amino acid hemoglobin gene or we can also say as the length of 861 nucleotides containing gene is:
(861-1) * 34 * 10-11 = 29240 * 10-11m
Thus, length of 287 amino acid hemoglobin gene is 29240 * 10-11m.