DNA Strand

DNA IS A FRAGILE MOLECULE. ABOUT A THOUSAND TIMES A DAY, SOMETHING HAPPENS TO IT TO CAUSE ERRORS. THIS COULD INCLUDE ERRORS DURING TRANSCRIPTION, DAMAGE FROM ULTRAVIOLET LIGHT, OR ANY OF A HOST OF OTHER ACTIVITIES. THERE ARE MANY REPAIR MECHANISMS, BUT SOME DAMAGE ISN'T REPAIRED. THIS MEANS YOU CARRY MUTATIONS