12th edition of my human genetics textbook


Glenn Nichols, surrounded by his hospice team. The author is in yellow.


Genetic Linkage

DNA Testing Kits as Holiday Gifts Can Bring Surprises

December 16, 2017

Tags: direct-to-consumer genetic testing

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Lately people have been sending me their direct-to-consumer (DTC) genetic testing results for help with interpretation. Although companies like 23andMe and ancestry.com do a pretty decent job of explaining findings, people not familiar with genetics might be confused. And they can be so upset, or scared of the science, that they forget that human behavior lies behind some disturbing information.

So it was that Lisa G., not her real name, emailed me recently, asking about the likelihood that a stranger claiming to be her half-brother really was. He’d gotten the idea from a 23andMe test. So as ads for DTC DNA tests ramp up as the holidays approach, I thought I’d relate this simple example of the feelings that findings can evoke. (more…)

Project to engage students in helping families with rare genetic diseases
Book Club Reader's Guide
Many challenging questions to stimulate thought and discussion.
Instructor's Guide
38 discussion questions to get students thinking and talking about gene therapy, including the science, ethical issues, and the drug approval process.
Narrative science
The Forever Fix is the uplifting true story of 8-year-old Corey Haas, who was cured of hereditary blindness just 4 days after gene therapy.
College Textbooks
A spectacularly-illustrated, clearly written human anatomy and physiology textbook, used in pre-health profession programs throughout the U.S.
A highly engaging, clearly written, beautifully illustrated introduction to the science of human genetics for the non-scientist. Now in its 11th edition, 12th to be published in September 2018.
An ideal starting point for anyone who wants to know more about genes, DNA, genomes, and the genetic ties that bind us all.

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