Friday Fluff – May 27th, 2011

By Razib Khan | May 27, 2011 3:05 pm


1) First, a post from the past: Personality variation by region (USA).

2) Weird search query of the week: “why are ligers so big?”

3) Comment of the week, in response to “AIBioTech Sports X Factor is not worth the money”:

As you say, transparency is the key – without that the market has a more difficult job of deciding whether it is valid or not. However they do list the genes and since many of the effects are based on single studies (with small numbers), it is safe to say that it is:

a) valid if you are prepared to live with a high “might be right” factor

b) valid if you think that a single study on men over 70 years old has some relevance for your children

c) not valid if you prefer to have the interpretations actually repeated in separate studies so that they are less likely to be based on chance

They say: GROUNDBREAKING PERFORMANCE Tests based upon the newly developed Reynolds Score

So what is this Reynolds Score exactly. the test is based on it so it must be important, is it worh $180. Would you buy a $180 phone based on “Reynolds OS” without seeing it? The only Reynols Score I can find does not seem relevant:

I’m certainly not against selling genetic tests, I’ve developed quite a few, I expect transparency though.
BTW – This is a good starting point for decigind on validity:
Try it and see if the Sports X Factor passes the test

4) And finally, your weekly fluff fix:

MORE ABOUT: Friday Fluff
  • Illinoisjoe

    can you clarify the “weird search term of the week” feature you do? I’ve been following your blog regularly for a few months now (and irregularly for about 5 years), but I don’t know if I get it. Are those searches you’ve done or searches you’ve detected that visitors have done on your blog?

    Either way, about the liger question, I’ve heard that strange hybrid sizes often reveal intersexual conflict in the respective species. For example, if male and female lions are locked in some kind of evolutionary struggle over the size of offspring, which plays out via imprinting maternal or paternally inherited genes, then when a mating occurs outside of this struggle, i.e. between a lion and a tiger, then you see freakishly big offspring that pose a danger to the mother, or freakishly feeble offspring that are in danger of perishing. Perhaps you’ve already coverd all this?

  • Razib Khan

    Are those searches you’ve done or searches you’ve detected that visitors have done on your blog?

    visitors :-) and yes, that’s why ligers came up.

  • Kiwiguy

    A dog raising liger cubs after their tiger mum refused.

    And this cat playing with a dolphin is the cutest thing I’ve ever seen.


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Gene Expression

This blog is about evolution, genetics, genomics and their interstices. Please beware that comments are aggressively moderated. Uncivil or churlish comments will likely get you banned immediately, so make any contribution count!

About Razib Khan

I have degrees in biology and biochemistry, a passion for genetics, history, and philosophy, and shrimp is my favorite food. In relation to nationality I'm a American Northwesterner, in politics I'm a reactionary, and as for religion I have none (I'm an atheist). If you want to know more, see the links at


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