These chromosomal regions could be composed of the now-defunct remains of ancient genes, known as pseudogenes, which were once functional copies of genes but have since lost their protein-coding ability (and, presumably, their biological function).

• 这些染色体区域可能由现在死亡的远古基因残余组成，如熟悉的假基因，它们曾经发挥过基因复制功能只是已经丧失了蛋白质编码能力（大概为它们的生物学作用）。