
Supercoiled DNA
In many forms of DNA the double helix itself forms a helix. This supercoiling, which has important biological consequences, is best described and analyzed by means of a simple mathematical model

Supercoiled DNA
In many forms of DNA the double helix itself forms a helix. This supercoiling, which has important biological consequences, is best described and analyzed by means of a simple mathematical model

Thinking about the Brain
Reflecting on itself, the human brain has uncovered some marvelous facts. What appears to be needed for understanding how it works is new techniques for examining it and new ways of thinking about it

The Genetic Code: III
The central theme of molecular biology is confirmed by detailed knowledge of how the four-letter language embodied in molecules of nucleic acid controls the 20-letter language of the proteins

The Genetic Code
How does the order of bases in a nucleic acid determine the order of amino acids in a protein? It seems that each amino acid is specified by a triplet of bases, and that triplets are read in simple sequence

Nucleic Acids
These polymers appear to carry the pattern of living matter from one generation to the next. Their basic chain consists of sugars joined by phosphates. Attached to the sugars, in turn, are bases

The Structure of the Hereditary Material
An account of the investigations which have led to the formulation of an understandable structure for DNA. The chemical reactions of this material within the nucleus gOvern the process of reproduction