These genes belonged significantly to three different clusters (Figure 6).

And to whom, then, does the discovered gene belong?

The majority of the approximately 20-25,000 genes belonging to the human genome are expressed specifically in the brain.

In all cases so far, one gene belongs to only one operon.

This gene belongs to the family of reticulon-encoding genes.

For example, because many proteins are multifunctional, the genes encoding them may belong to several target groups.

This gene belongs to a family of genes that function as receptors for tachykinins.

This gene belongs to the peroxin-12 family.

Most genes belong to larger families of genes of shared ancestry.

This gene belongs to the tumor necrosis factor receptor superfamily.