Before cells divide, they have to unwind their chromosomes, copy of all of their DNA, and then wrap the DNA backup into chromosomes. When this process happens, cells often lose a little bit of DNA from the tips of their chromosomes. An enzyme, called telomerase, can help repair chromosomes by adding that DNA back onto the ends. Scientists are interested in telomerase because inhibiting it … Continue reading Cellular Secrets: Getting a look at how cells repair DNA