Two Peas in a Pod? A Case of Questionable Twins

Part III

by
Paul Welsh
Singapore American School

After technicians at the fertility clinic saw the gels, they were quick to defend their procedures and further suggested that the results showed Mrs. Jones had committed adultery. “I was offended by their claims,” Hannah said. “I live in decency.”

Ensuing legal action resulted in the clinic running additional DNA profiles between Darrell, his mother, and selected male patients from the clinic; see Figure 2.

Question

  1. What conclusions can be drawn from the results shown in gels 5-8? What are the only likely scenarios explained by this evidence?

Go to Conclusion


Originally published at http://www.sciencecases.org/twins/twins3.asp

Copyright © 1999–2012 by the National Center for Case Study Teaching in Science.  Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.

Home