They form big gene clusters with each other.
It is part of a gene cluster on chromosome Xp11.23.
Thus the three gene clusters, involving a total of 33 genes, explain about 20% of the variation.
A gene cluster is a set of two or more genes that serve to encode for the same or similar products.
The dendrogram shown in the upper right plot of Figure 5also indicates four gene clusters.
This model predicts that the gene clusters must have conserved between species.
This is not the case for many operons and gene clusters seen in eukaryotes.
While this study suggests that gene clusters may exist among friends, these findings are far from conclusive.
It can also contribute to the copy number variation seen in some gene clusters.
In this paper, we will focus on gene clusters of size two, that is, gene pairs.