Credits

Tutorial Menu:

 1.    Two photos of people from around the world and two photos of apes
reproduced with permission from Corel Corporation, Ottawa, Canada

Overview:

 1.  Drawing of cells cultured to produce a karyotype
produced by Dennis O'Neil (microscope image component reproduced with permission from IMSI Corporation, San Rafael, California)
 2. Drawing of a human male karyotype
produced by Dennis O'Neil

Detection:

 1. Photo of a pregnant woman undergoing ultrasound monitoring of her fetus in a doctor's office
  reproduced with permission from Corel Corporation, Ottawa, Canada
 2 Drawing of Amniocentesis
reproduced from unknown source and modified by Dennis O'Neil (see note)
 3. Photo of a normal human fetus at 14 weeks (8.2 cm. crown to rump)
  reproduced with permission from Corel Corporation, Ottawa, Canada
 4. Drawing of chorionic villi biopsy
reproduced from unknown source and modified by Dennis O'Neil (see note)
 5. Drawing of blood being drawn for an AFP test sample
reproduced with permission from Corel Corporation, Ottawa, Canada (modified by Dennis O'Neil and Elaine Collins)
 6. Finding Disease Genes--from the PBS Nova series video Cracking the Code of Life (copyright 2001 WGBH Educational Foundation)
  linked with permission from WGBH Educational Foundation, Boston

Autosomal Abnormalities:

 1.  Drawing of a Down syndrome karyotype
produced by Dennis O'Neil in part from public domain karyotype illustration produced by the National Human Genome Research Institute
 2. Photo of an 8-year-old boy with Down syndrome
reproduced with permission the terms of the GNU free documentation license.
 3. Down Syndrome video clip
  produced by Life Sciences, Virginia Commonwealth University and shown on YouTube

Sex Chromosome Abnormalities:

 1.  Turner Syndrome video clip
produced by New Jersey Network Public (NJNP) Television and shown on YouTube

Glossary:    (illustrations already referenced above are not listed)

 1.  Drawing of the human male reproductive system
reproduced with permission from Corel Corporation, Ottawa, Canada (enhanced by Dennis O'Neil)

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Copyright 2000-2012 by Dennis O'Neil. All rights reserved.