George Packer

For 20 years, my mother, my sister and I had seldom spoken of my father. If he happened to come up in conversation, pain and embarrassment entered the room and stayed until he disappeared back into the silence with which we all felt more at ease.

What do cells do when they see a broken piece of DNA? Cells don't like such breaks. They'll do pretty much anything they can to fix things up. If a chromosome is broken, the cells will repair the break using an intact chromosome.