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• n  a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order
  humans have 22 chromosome pairs plus two sex chromosomes

• In some cells, the genes on one X chromosome are active; in other cells, by chance, the same set of genes, with different variations, are active on the other X chromosome.
• Which chromosome, they did not say.
• A microscopic piece of genetic material known as the Y chromosome made headlines last week.

News & Articles

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• #JustJoffreyThings: When a Teen King Takes Over a Teen Meme
  Teenagers rule the web, and the XX-chromosome half of that cabal has taken it by storm with the blog Just Girly Things (or #JustGirlyThings, as it often calls itself); the Tumblr is a series of captions of, you know, girly things ("borrowing your friend's phone cases," "wanting a summer romance," ... More »
  June 13, 2013 - Vulture
• TRADE NEWS: Agilent Technologies Introduces HaloPlex Next-Generation Sequencing Panels Targeting Cancer and Inherited ...
  Agilent Technologies Inc. today introduced a new series of HaloPlex next-generation sequencing panels targeting specific disease states. Two catalog products, the HaloPlex Cancer Research Panel and the HaloPlex Cardiomyopathy Research Panel, plus five predesigned research panels for arrhythmia, ICCG genomic regions, X chromosome, Noonan syndrome, and connective tissue disorders are now available.
  June 11, 2013 - Business Wire via Yahoo! Finance
• Author Jessica Wapner to speak at Bush Library and Museum June Issues Forum and Book Signing
  COLLEGE STATION, Texas, June 11, 2013 /PRNewswire-USNewswire/ -- The George Bush Presidential Library and Museum presents the free Issues Forum "The Philadelphia Chromosome" June 25, 7 p.m. CDT at the Annenberg Presidential Conference Center at Texas A&M University.The presenter is Jessica Wapner, a freelance writer focused mainly on healthcare and medicine. Her work is published in The New York ...
  June 11, 2013 - PR Newswire via Yahoo! News

Quotes

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• Sarah Palin in KTAR.com
  I'm looking at him right now, and I see perfection,Palin said. "Yeah, he has an extra chromosome. I keep thinking, in our world, what is normal and what is perfect?"
• Craig Venter in msnbc.com
  This is the first synthetic cell that's been made,said Venter. "We call it synthetic because the cell is totally derived from a synthetic chromosome, made with four bottles of chemicals on a chemical synthesizer, starting with information...
• Jeff Sessions in The BLT: Blog of Legal Times
  I think we're seeing a common DNA run through the Obama nominees, and that's the ACLU chromosome,said Sen. Jeff Sessions (R-Ala.) during a meeting of the Senate Judiciary Committee.