What structural consideration prevents the bases A and G from forming a complementary base pair?

What is the basic monomer (a building block of a DNA molecule?

The backbone of the DNA molecule is made up of two alternating componebts, what are these? Explain.

Complementary base pairing between nucleotides makes which process possible?

How many GB is a DNA?

Moira, a biochemistry major, wanted to explore the shapes a single-stranded DNA molecule can take. She sketched the two shapes below. Her professor was impressed with Moira’s imagination and artistic ability, but she informed Moira that only one of her sketches was feasible. In the sketches, the lines indicate complementary base pairing. (d) Would a new double-stranded molecule assume the shape similar to one in the drawing? (e) Why or why not?

1.3

A primitive eukaryote was discovered that displayed a uniquenucleic acid as its genetic material. Analysis revealed the followingobservations:(a) X-ray diffraction studies display a general pattern similarto DNA, but with somewhat different dimensions and moreirregularity. (b) A major hyperchromic shift is evident upon heating andmonitoring UV absorption at 260 nm.(c) Base-composition analysis reveals four bases in the followingproportions:Adenine = 8% Hypoxanthine = 18%Guanine = 37% Xanthine = 37%(d) About 75 percent of the sugars are deoxyribose, whereas25 percent are ribose.Attempt to solve the structure of this molecule by postulating amodel that is consistent with the foregoing observations.

1) Use the Leontis-Westhof base pair classification to identify the interaction occurring between each of the base pairs formed in the image below:

When an aromatic hydrocarbon intercalates between two stacked base pairs, what effect may there be on DNA structure?