DNA is found in nearly all living cells ... nitrogenous bases within another polynucleotide by way of special chemical bonds called hydrogen bonds. This base-to-base bonding is not random ...

The structure of DNA can also be described as a ladder. The chemical backbones of the ladder are made up of sugar and phosphate molecules that are connected by chemical bonds. The rungs of the ...

Upon binding, helicases melt the DNA, breaking the chemical bonds holding the double helix together. They then pull the two ...

They constantly untangle knots in the DNA strand and create new chemical bonds when a strand of DNA breaks somewhere in the nucleus. "When people read about repairing genetic material, they often ...

They constantly untangle knots in the DNA strand and create new chemical bonds when a strand of DNA breaks somewhere in the nucleus. When people read about repairing genetic material, they often ...

This image depicts the chemical structure of cytosine ... enzymatic digestion and chromatographic purification techniques. In DNA, cytosine pairs with guanine through three hydrogen bonds, forming a ...

Chemical structure of guanine ... properties of guanine is its ability to form three hydrogen bonds with cytosine. This strong base pairing is crucial for the stability of the DNA double helix and the ...