DNA Dan - A Genetics & Genomics Podcast

DNA Dan - A Genetics & Genomics Podcast

Join DNA Dan as he dives deep into the world of genetics, genomics, DNA, and the future of precision genomic medicine. Dan discusses topics ranging from health and ancestry genetic testing, forensic genetics, genetics and mental health, common myths about genetics, and more. DNA Dan, SCU Professor of Genomics, Dan Handley, M.S., Ph.D., shares his knowledge from his over 30 years of experience in the world of advanced genomics research and biotechnology. For more information about Southern California University of Health Science's Master of Science Program in Human Genetics and Genomics, please visit our website. https://bit.ly/SCU-DNA_Dan

Episodes

October 19, 2021 6 min

Over the 1960s through 1980s, more was learned about the structure of chromosomes and the functions of some genes. However, we did not have a comprehensive map of the entire human genome. Learn how molecular biology techniques become more sophisticated, and scientists could start determining the nucleotide sequence of small portions of chromosomes.
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In each nucleus of a human cell, the total length of DNA contained in it is about 6 feet long. Now, the size of a nucleus in a human cell is only 6 microns in width. A micron, otherwise called a micrometer, is 1 one-millionth of a meter. To put this in perspective, the average human hair is about 100 micrometers in diameter, and a grain of salt is 500 micrometers in width, give or take.  

So how are 6 feet of DNA packed inside such ...

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Today we understand much more detail about the structure of DNA. It turns out that Watson, Crick, Wilkins, Franklin, and the many others involved gave essentially the correct answer about the DNA molecule and how it is structured. 
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August 24, 2021 5 min

Rosalind Franklin played a pivotal role in the discovery of the structure of DNA. Among scholarly circles, Franklin remains an enigmatic figure and the subject of much controversy. What is not under debate is that she made enormous contributions to science, and she was taken from us much too soon.
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August 10, 2021 9 min

Now the race was on to figure out the structure of DNA. It’s a rather complex story involving many different scientists, primarily in the U.S. and England. 
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Join DNA Dan each month as he dives deep into the world of genetics, genomics, DNA, and the future of precision genomic medicine. Dan discusses health and ancestry genetic testing, forensic genetics, genetics and mental health, common my...

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July 28, 2021 7 min

In this episode, part 2 of the discovery of DNA, we come to understand how DNA was first isolated and demonstrated to be the molecule responsible for heritable traits. In the early to mid-19th century, biologists assumed that heritable traits were transmitted by proteins in cells. 

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July 28, 2021 6 min

Since prehistoric times, people have noticed how children tend to resemble their parents and grandparents. People also recognized that some human diseases tended to run in families as well. Learn why this happens and how it was discovered. 

What is the substance in cells that carries the heritable trait information? Further, what is the structure of this substance?
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July 14, 2021 7 min

Dr. Handley serves as  Director of the Master of Science in Human Genetics and Genomics degree program at the Southern California University of Health Sciences in Whittier, CA.  He is excited to bring you this podcast on genetics, genomics, and the future of genomic medicine! 

Join DNA Dan each month as he dives deep into the world of genetics, genomics, DNA, and the future of precision genomic medicine. Dan discusses topics ranging...

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