Question

a single strand of the dna double helix had 600 nitrogenous bases. the total number of phosphodiester bonds in this DNA double helix would be a)1198 b)600 c)598

Answer 1

Answer:

I think is b options is it correct options

Answer 2

If a single strand of the DNA double helix had 600 nitrogenous bases, the total number of phosphodiester bonds in this DNA double helix would be a) 1198.

• In a double-stranded DNA molecule, two nitrogen bases on the same strand are connected to one another by a phosphodiester bond.
• If one strand of DNA has n nitrogen bases, then the DNA molecule will have a total of 2n base pairs.
• The total number of phosphodiester bonds will be 2n-2.
• This is because the bases at the end of each strand will not form any bond.
• In the given question, n = 600

       So the number of phosphodiester bonds = 2n - 2

       = 1200 - 2

      = 1198