(For the meaning, see LAW.) The reference is to the synagogue rolls, which were written in Hebrew, so that the passage has no bearing on the language used by Christ. For the form of the jot, compare the tables in HDB, article Alphabet, more fully in Chwolson,. Corp. Inscr.
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.
This backbone carries four types of molecules called bases and it is the sequence of these four bases that encodes information. The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code.