Inter-population difference in European height

By Razib Khan | August 20, 2012 10:15 pm

A quick mea culpa. Yesterday I put up a post on the difference in height between northern and southern Europe, following the lead of the heading of the paper which I blogged. But, in the text they do note that their sample is skewed toward northern Europe. Additionally, their geographic coverage is stated in the supplements. As noted by some commenters not only is it northern Europe skewed, but it’s really western Europe biased. There’s nothing wrong with that as such, but it leaves much of Europe outside of this west-central transect unsampled. Therefore, I’m a little more cautious of making pan-European latitudinal generalizations.


That being said, I still suspect there is going to be spatially structured differences in the concentration of alleles which predispose one to great height. I’d especially be curious to see if the people of the Dinaric region tend to cluster with northern Europeans, rather than their Balkan neighbors. Please note that one of the important aspects of this study is that they replicated their findings among siblings. When observing correlations between traits on a population-by-population basis and then extrapolating, it is of the essence that those patterns can be replicated in family-based studies. This applies to within population observations as well. For example, there is some correlation between height and intelligence. But that correlation disappears among siblings (i.e., tall siblings are no more intelligent than short siblings).

Finally, a friend brought to my attention some serious concerns about the evolutionary quantitative genetic model outlined in the paper. After reading their critique I would say that though they have convinced me of the likely importance of these alleles in generating inter-population differences, I am less than confident of their adaptive model.

CATEGORIZED UNDER: Genetics, Genomics
MORE ABOUT: Height
  • jb

    For example, there is some correlation between height and intelligence. But that correlation disappears among siblings (i.e., tall siblings are no more intelligent than short siblings).

    There is no correlation at all? I understand that looking within families helps eliminate certain confounding factors such as nutrition, but I was under the impression that there was a positive correlation between brain size and height, and also between brain size and intelligence, and on the basis of that alone it seems to me there ought to be some correlation between height and intelligence even within families. Maybe the correlation coefficients for the two known correlations are small enough that the combined correlation is too small to resolve?

    Note: it’s been years since college, and to my regret I never took a statistics course, so maybe I am wrong to expect that correlations should be transitive.

    Also, I’m interested in this partly because I’m short myself. :-/

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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 http://www.razib.com

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