Question

The base sequence on one of the strands of DNA is TAC TAG GAT.
(i) Give the base sequence of its complementary strand.
(ii) What is the distance maintained between the two consecutive paired bases in the DNA molecule?
(iii) Who contributed the base complementarity rule?
(iv) Categorise these bases using their full names.
(v) What holds these base pairs together?

Answer 1

I) The sequence for the complementary strand is the

AUG AUC CUA.

ii) The distance between 2 base pairs is 3.4 angstrom.

iii) the base complemetary rule was gven by Chargaff.

iv) The bases are known as Adenine, guanine, Cytosine, Uracil in RNA and Thymine in DNA.

v) The base pairs are held together by hydroge bonding.