And will they know, moreover, that there are interesting patterns in the geographical distribution of the lactase persistence gene (Bersaglieri et al. 2004)?
Two hypotheses are usually proposed to explain the particular distribution of the lactase persistence phenotype.
Monte Carlo simulations are performed to check the developed approximate distributions for the persistence time, and examples of application are provided for a sample ship.
The geographic distribution of the lactase-persistence allele is strongly correlated with historical milk consumption.
The particular distribution of lactase persistence throughout the world indicates that this trait evolved under strong positive selection [5], [6], [7].
In order to make sense of the distribution of lactase persistence, students will have to apply plenty of what they've learned about mutation, selection, drift, and migration, as well as to make a bit of a foray into advanced ideas such as gene-culture coevolution (Beja-Pereira et al. 2003).
Finally, we performed a comparative study of species that retain an open canal in order to describe the distribution of BHC persistence amongst vertebrates and we have attempted to relate the presence or absence of the BHC with modifications in midline anatomy that could be due to modulation in Shh signaling.
This study used a limited number of known or hypothesised risk factors for ASF and our own subjective assessment of the importance of those risk factors to predict the distribution of ASF persistence via sylvatic and domestic transmission cycles in Africa.
We first analyse the distribution of lactase persistence in various continents in relation to geographic variation, pastoralism levels, and the genetic patterns observed for other independent polymorphisms.
In particular, the geographic distribution of lactase persistence is highly correlated with the distribution of dairy farming, and this phenotype is more commonly observed in northern Europe.
