If poly A is added to poly U, to form a double or triple helix, the combination is inactive.

Next quotes

• Francis Crick:

  The meaning of this observation is unclear, but it raises the unfortunate possibility of ambiguous

• Francis Crick:

  The balance of evidence both from the cell-free system and from the study of mutation, suggests tha

• Francis Crick:

  How is the base sequence, divided into codons? There is nothing in the backbone of the nucleic acid

• Francis Crick:

  For simplicity one can think of the + class as having one extra base at some point or other in the

• Francis Crick:

  Do codons overlap? In other words, as we read along the genetic message do we find a base which is

• Francis Crick:

  Attempts have been made from a study of the changes produced by mutation to obtain the relative ord

• Francis Crick:

  A final proof of our ideas can only be obtained by detailed studies on the alterations produced in

• Francis Crick:

  A comparison between the triplets tentatively deduced by these methods with the changes in amino ac

• Charles Reade:

  Not a day passes over the earth, but men and women of no note do great deeds, speak great words and

• Charles Reade:

  Sow an act and you reap a habit. Sow a habit and you reap a character. Sow a character and you reap