From the human genome project itself website
Human Genome Project Completion: Frequently Asked Questions
"A genome is an organism's complete set of deoxyribonucleic acid (DNA), a chemical compound that contains the
genetic instructions needed to develop and direct the activities of every organism. DNA molecules are made of two twisting, paired strands. Each strand is made of four chemical units, called nucleotide bases. The bases are adenine (A), thymine (T), guanine (G) and cytosine (C). Bases on opposite strands pair specifically; an A always pairs with a T, and a C always with a G."
And
"Each chromosome contains hundreds to thousands of genes, which carry the
instructions for making proteins."
And
"The primary method used by the HGP to produce the finished version of the human
genetic code is map-based, or BAC-based, sequencing."
And
"As a result, research involving other genome-related projects (e.g., the International HapMap Project to study human genetic variation and the
Encyclopedia of
DNA Elements, or ENCODE, project)"
And
"Another example is the ENCODE project, which aims to create a comprehensive
encyclopedia of the functional elements
encoded in the DNA sequence, by cataloging the identity and precise location of all of the protein-
encoding and non-protein-
encoding genes within the genome."
There is so many other webpages that also call it a code of instructions as well.
Why should we say we dont know?