Chloroplast DNA is vastly more abundant than nuclear DNA, since each plant cell can have thousands of copies of chloroplast genes but just two to four copies of each nuclear gene.
叶绿体基因(ChloroplastDNA)远比核基因(nuclearDNA)丰富,因为每个植物细胞可以有数千个叶绿体基因,但是每个核基因只有两个到四个核基因副本。