* Download comes with a free subscription to our newsletter. You can unsubscribe any time. You will not get duplicate emails if you download more than one report.

  1. 1

Chimerism is a condition in which a person’s body contains two different sets of DNA. It can occur in fraternal twins and as a consequence of bone marrow transplantation. A recent news article describes a unique case of chimerism that could have implications for forensic scientists.

Three months after a man received a bone marrow transplant to treat his acute myeloid leukemia, some tissue samples from his body contained two sets of DNA: his own, and that of the donor. Other tissues had only the recipient’s DNA. Remarkably, the changes in the man’s DNA persisted for several years, and now, some four years after the bone marrow transplant, the DNA in his semen is exclusively that of the donor.

This case could have serious implications for the field of forensic science, especially when investigating sex crimes. For example, if an individual developed chimerism following a bone marrow transplant and then went on to commit a crime, it could mislead forensic investigators.

  1. You must first login , or register before you can comment.

    Markdown formatting available
     

This news story was included in a recent science digest.

The science digest is a special email we send out just twice per month to members of our premium community. It covers in-depth science on familiar FoundMyFitness related topics.

If you're interested in trying out a few issues for free, enter your email below or click here to learn more about the benefits of premium membership here.