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   "A word to the wise ain't necessary --  
          it's the stupid ones that need the advice."
					-Bill Cosby

Friday, March 11, 2005


Pinker defends Summers and free inquiry

Steven Pinker has a great article in the The New Republic regarding the Lawrence Summers flap and the chilling effect of taboos on free inquiry.

(Hat tip: Jim Lindgren at Volokh Conspiracy)

Update: Lubos Motl at Lubos Motl's Reference Frame has compiled a list (with links) of 54 articles supporting Summers. While you're there, check out Lubos's blog for updates on "the most important events in our superstringy universe."

2 Comments:

Blogger Kate Marie said...

Thanks, Lubos! That's great. I've updated my post with a link to your compilation of articles.

March 11, 2005 10:33 PM  
Blogger Armando Ortega said...

Hi,

Steven Pinker writes about the genetic difference between sexes, and just the next day the big news is this:

X Chromosome Shows Why Women Differ from Men

Wed Mar 16, 2:12 PM ET Science - Reuters

By Patricia Reaney

LONDON (Reuters) - Scientists have cracked the genetic code of the female X chromosome which is linked to more than 300 human diseases and may help to explain why women are so different from men.

It contains 1,100 genes, or about five percent of the human genome, along with information that may help to improve the diagnosis of illnesses ranging from hemophilia, blindness and autism to obesity and leukemia.

The discovery, by an international consortium of scientists, shows that females are far more variable than previously thought and, when it comes to genes, more complex than men.

"The X chromosome is definitely the most extraordinary in the human genome in terms of its inheritance pattern, its unique biology ... and in terms of its association with human disease," said Dr Mark Ross, of the Wellcome Trust Sanger Institute in Britain which led the consortium.

WHY THE DIFFERENCE?

Chromosomes, which are found in the nucleus of every cell, contain genes that determine the characteristics of an individual. Women have two X chromosomes while men have an X and a Y, which gives them their male features.

The research, which is reported in the science journal Nature, shows the Y is an eroded version of the X chromosome with only a few genes. The X chromosome is also bigger than the Y and because females have two copies, one X chromosome is largely switched off or inactivated.

But not all of the genes on the silenced chromosome are inactivated, which could explain some of the differences between men and women, according to Laura Carrel, of Penn State College of Medicine in Pennsylvania who also reported her findings in the journal.

The X inactivation also varies widely among women.

"The effects of these genes from the inactive X chromosome could explain some of the differences between men and women that aren't attributable to sex hormones," she said in a statement.

Genetic mutations and diseases such as color blindness, autism and hemophilia that are linked to the X chromosome tend to affect males because they do not have another X to compensate for the faults.

The X chromosome is also home to many genes linked to mental retardation and to the largest gene, called DMD, in the human genome. Mutations in DMD cause Duchenne Muscular Dystrophy, a disabling and fatal disease in men.

"There are a disproportionate number of known diseases mapped to the X chromosome," said Dr David Bentley, of the Wellcome Trust Sanger Institute.

"In seeing what goes wrong, we can begin to understand the biological processes of the normal body much better," he added.
(Taken Verbatim from Yahoo News).

Armando Ortega
http://marketing-in-mexico.blogspot.com

March 16, 2005 11:36 PM  

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