Blinded by the Light: UV Rays and DNA Damage

According to the World Health Organization, between 2 and 3 million cases of skin cancer occur globally every year. Many of these cancers are caused by preventable damage to DNA by UV light during sunbathing. In this experiment, students directly observe the effects of UV light on DNA. Students will run a time series test comparing UV exposed plasmid samples and examine their results using electrophoresis. The ability of various sunscreens to prevent DNA damage can also be tested.