Ancestral Linkage Groups
The numbers below the figure represent the ancestral linkage groups, each ancestral linkage groups to a different amphioxus chromosome. According to research, most amphioxus chromosomes are homologous to four different chicken chromosomes (see table for details). Based on this relationship, we further divided the identified ohnolog groups into 17 categories. The pink lines show the collinear relationship of ohnolog genes on four homologous chromosomes in chicken, the green lines show the collinear relationship of ohnolog genes on three homologous chromosomes in chicken, and the yellow lines show the collinear relationship of ohnolog genes on two homologous chromosomes in chicken.
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References