Biology Forums - Study Force

Which of the following determines the specificity of nucleic acid hybridization?
A.  base composition
B.  A-T and G-C hydrogen bonds
C.  sequence complexity
D.  stacking interactions
E.  wobble rules


All of the following statements concerning the Watson-Crick Model of DNA structure are true EXCEPT
A.  the two strands of DNA are complementary.
B.  the hydrogen bonding between guanine and cytosine is stronger than between adenine and thymine.
C.  the two DNA strands are anti-parallel.
D.  the  nm periodicity is the distance for one complete turn of the helix.
E.  the stacked nitrogenous bases form the backbone of each DNA strand.


Spontaneous conversion of adenine and cytosine from the amino to the imino forms of these bases within DNA results in
A. cleavage of the glycosidic bond and loss of the base.
B. cleavage of the 3', 5' phosphodiester DNA backbone.
C. alteration of the hydrogen bonding of the bases.
D. formation of guanine and thymine.

Q1.
A

Q2.
D

Q3.
C