whereas A (adenine) bonds specifically with T (thymine). The GC pair is bound by three hydrogen bonds, while AT pairs are bound by two hydrogen bonds. DNA with high GC-content is more stable than DNA with low GC-content, but contrary to popular belief, the hydrogen bonds don't stabilize the DNA significantly and stabilization is mainly due to stacking interactions. In spite of the higher thermostability conferred to the genetic material, it's envisaged that cells with DNA with high GC-content… (More on Gc-content)