If Pyrimidines Could Bind to Other Pyrimidines,and Purines Could Bind

Multiple Choice

If pyrimidines could bind to other pyrimidines,and purines could bind to other purines,what would be the impact on the DNA double helix?

A) The width of the double helix would vary rather than having a fixed width.
B) The phosphodiester bonds would be unable to form.
C) There would be a reduced requirement for phosphates in nucleotides.
D) The DNA backbone would be made of nucleosides.
E) The sugar would need to be ribose instead of deoxyribose.