Question

The fact that a purine base always paired through hydrogen bonds with
a pyrimidine base leads to, in the DNA double helix:
a. the antiparallel nature
b. the semiconservative nature
c. uniform width throughout DNA
d. uniform length in all DNA


NCERT Class XII
Biology - Main Course Book

Chapter 6. Molecular Basis of Inheritance

Answer 1

c. uniform width throughout DNA is the answer.

Answer 2

Answer:

Uniform width throughout DNA

Explanation:

The purine base in the DNA is the two ring structure that binds to the pyrimidine to form the double helical structure while pyrimidine is the single ring structure.

The binding of the purine and pyrimidine results in the equal width of the bases across the DNA and provides the needed stability to the whole structure