Original sentence: In the late 1980s, most molecular biologists considered selfish genetic elements to be the exception, and that genomes were best thought of as highly integrated networks with a coherent effect on organismal fitness.Subsequently, the population genetics theory for homing endonucleases and CRISPR-based gene drives has become much more advanced.While their role in evolution long remained controversial, in a review published a century after their first discovery, William R
Edited sentence: In the late 1980s, most molecular biologists considered selfish genetic element to be the exception, and that genomes were best thought of as highly integrated networks with a coherent effect on organismal fitness.More recently, the population genetics theory for homing endonucleases and CRISPR-based gene drives has become much more advanced.While their role in evolution long remained controversial, in a recent review, a century after their first discovery, William R