Chris- It is interesting indeed. But, truth be told, I don't really feel that I 
understand it - certainly not from what is presented here. I haven't read the 
research (oops. Another press conference before the article?)- if I can! I 
think it would be unwise to ignore, yes. But if you take the whole article, the 
quote that ends it is:

"This and other research, Dr. Witte said, shows 'you’ve got a *little bit* more 
genetic variation than previously thought.' [emphasis mine]

In the meantime, a lot of biology textbooks may need updating.

Dr. Dumanski pointed out, for example, that as his study was going to press, 
the following statement could be found on the Web site of the National Human 
Genome Research Institute, the group that financed the government project to 
decode the human genome: 'Most of any one person’s DNA, some 99.9 percent, is 
exactly the same as any other person’s DNA. (Identical twins are the exception, 
with 100 percent similarity).'

Doesn't this mean that we change that last sentence to 'Most of any one 
person’s DNA, some 99.9 percent, is exactly the same as any other person’s DNA. 
(Identical twins are the exception, with 99.9999 percent similarity).' 

An important difference, yes. But a *big* difference? :)


Tim
_______________________________
Timothy O. Shearon, PhD
Professor and Chair Department of Psychology
The College of Idaho
Caldwell, ID 83605
email: [EMAIL PROTECTED]

teaching: intro to neuropsychology; psychopharmacology; general; history and 
systems

"You can't teach an old dogma new tricks." Dorothy Parker



-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Mon 3/17/2008 10:50 PM
To: Teaching in the Psychological Sciences (TIPS)
Subject: [tips] Identical twins?
 

Have you been teaching your students that identical (monozygotic) twins have
identical genes? Turns out that's not correct. See this NYT article:

http://tinyurl.com/33m4c3

Chris Green
York U.
Toronto, Canada
[EMAIL PROTECTED]

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