About this blog
Please note that DNA Science is now an archived blog.
Unless otherwise noted, material posted to any PLOS staff or independent blog on the PLOS Blog Network is available for reuse by readers under a CC BY Creative Commons Attribution License 4.0
Under a CC BY license, the individual blogger owns the copyright but allows anyone to copy and distribute the work provided the individual blogger is given credit as the author, and PLOS Blogs is credited as the source. For more information please visit http://creativecommons.org/licenses/by/4.0/.
Some content may maintain a CC BY‑NC Creative Commons Distribution license. Any blog or image posts carrying this CC BY‑NC license require different reuse terms as follows: the blogger owns the copyright and allows anyone to copy and distribute the work, provided the reuse is for noncommercial purposes only, the blogger is given credit as author, and PLOS Blogs is credited as the source. For more information on CC BY vs CC BY-NC licensed blog content please visit our About PLOS Blogs page.
To check licensing terms for a PLOS Blog or request for commercial reuse of a CC BY-NC PLOS Blogs post or image, please email your request to [email protected].
Geneticist Ricki Lewis blogs from the cutting edge of genomics, including genetic testing, stem cells, gene therapy and more.

Ricki Lewis is a science writer with a PhD in genetics. The author of several textbooks and thousands of articles in scientific, medical, and consumer publications, Ricki’s first narrative nonfiction book, “The Forever Fix: Gene Therapy and the Boy Who Saved It,” was published by St. Martin’s Press in March 2012. In addition to writing, Ricki provides genetic counseling for parents-to-be at CareNet Medical Group in Schenectady, NY and teaches “Genethics” an online course for master’s degree students at the Alden March Bioethics Institute of Albany Medical Center.