Britons living in the European Union may lose the right to live in another EU country after Brexit. Is this fair?
11 July 2017, 15:38
What happens to DNA in blood when it goes into someone else? Here's the answer.
What happens to DNA in blood when it goes into someone else? Ricardo, Swansea
Name: Professor Howe, Birmingham
Qualification: Professor in public understanding in science
Answer: Red blood cells don’t have any DNA because they don’t have a nucleus in order so that they can carry more oxygen. White blood cells however do have a nucleus, but they last for about a day, so it might be possible to find some DNA of a donor for a very short amount of time.