What Ethiopian Genetic Diversity—Really—Reveals!

Introduction:

 

Image Caption: A rendition of an Ethiopian male, featuring what can be considered an average look among the major Cushitic and Semitic speaking populations of Ethiopia. Click on the image to expand!

A recent publication by Pagani & co. (2012), under the heading "Ethiopian Genetic Diversity Reveals Linguistic Stratification and Complex Influences on the Ethiopian Gene Pool", revisits the recurring issue of Ethiopian DNA profiles. In fact, one of the participants of this research, Toomas Kivisild in particular, was one of the authors of one of the last major studies on Ethiopian mtDNA, which was also a subject of blog posting on this site [see: Following Trails of the Cro-Magnon - I and Following Trails of the Cro-Magnon - II, for examples]. Some interesting findings surfaced in that study, as it relates to peculiarities about Ethiopian mtDNA gene pool; these same characteristics reappear in this latest study, as well shall notice in following segments of this entry.

As the authors start of their notes with laying out the goals of their research, they point out the supposed shortcomings of previous publications, particulary as it concerns Ethiopian DNA. In doing so, the authors lament on the supposed infrequency of DNA studies—involving African samples—that focus on Ethiopians in contrast to African samples from central and western Africa. This is right after the authors tell the reader that, because Ethiopia has proven to be relatively rich in human paleontological record, and in their words, "because of Ethiopia’s geographical position between Africa and Eurasia, its capital, Addis Ababa, is often used in genetic studies as a proxy embarkation point for modern human range expansions."

This smacks of double speak, when one considers that the subject of "human range expansions" figures quite a lot in population genetics research undertaken by 'western' research teams, and these seldom avoid including eastern Africa, the African Horn in particular, because its often implied rep of being a "cradle" to modern humanity. On top of this, Ethiopians have often served as "props" by Eurocentric ideologues, both in amateur and academic circles, to effect some ideologically-expedient wedge or another between continental Africans, whereby they feel at liberty to isolate what they either presume to be the source of "their kind" (Europeans) from the "others", who are generally lumped together and dismissed as being "inferior" and/or "undesirable", or use the target group—like Ethiopians—to explain away, and importantly, diminish natural African diversity as that made possible primarily because of foreign contribution.

Knowledgebase Tool Kit: Ways to Test Just How Secular One's Nation is!

Image Caption: Coin with "In God We Trust". Click on the image for a higher resolution version

Introduction

Many nations, especially those in the so-called "west", have societies that routinely pride themselves with the self-promoting perception that their respective country is the epitome example of secular bustling "democracy" and "civil-liberty friendly" social setup that is supposedly found nowhere else...so go the trumpets of patriotism. However, if one wants to get a truly sober assessment of one's own country, of which one is determined to be a citizen, then there are clear ways of testing the veracity of perception commonly pressed forward by the media and ruling circles of one's own nationality; let's take self-anointment proclamations of secularism for instance, and discuss that.

Update on Investigation into the "Mysterious" EpiPaleolithic Maghrebi Remains!

Click on the image for a higher resolution

Introduction

This entry is supposed to serve as an update and add-on to a blog entry that was first published here back in May 5th, 2010, under the heading, An Investigation into the "Mysterious" Mesolithic Maghrebi populations. The arguments made there—in the main, are still quite sound, but over the years, some DNA-assignment shuffling within the reconstructed human mtDNA phylogenetic network had taken place. This sort of thing happens quite a bit in the field of molecular genetics, usually in the form of either changing the phylogenetic location of a newly identified clade or a preexisting one, and/or renaming entire clades with new naming schemes, since researchers tend to see information about larger phenomena in the form of fragments. As such, sometimes previous information (source material), especially on newly identified clades, becomes obscure or rarer. To address a situation such as this, in the few occasions where they may have occurred, this entry has revisited elements of the aforementioned entry, modify as necessary, or simply add to information previously posted. 

So What's the Deal with the Neanderthal, Their Demise? - 4

This a carry-over topic from a previous installment: So What's the Deal with the Neanderthal, Their Demise? - 3

To recap:

Were contemporary modern humans [the species that lives on to this day] responsible? Or did everything else that was working fine for the Neanderthals' survival, prior to the arrival of the so-called anatomically modern humans, came to a halt for some reason or another?

Introduction: 


The discovery of  Neanderthal remains [see the entry: How are the Media and Schools catching up with Scientific Progress? Pt.4] has naturally raised the curiosity of people, because they seem so close to us humans, and so, many inquiring minds want to know what happened to these extinct human cousins. Preexisting evidence so far only present sketchy explanations for not only exactly how they (Neanderthals) reached their extinction, but also precisely where and from what ancestral line [although there are guesses as to what that might be] Neanderthals emerged. Notwithstanding significant strides made in the discipline of molecular genetics, as well as new findings in human paleontological record, researchers are still battling out the search for the most solid and parsimonious answers to those aforementioned fronts.

There have been suspicions within the scientific community about the role of modern humans in the demise of Neanderthals for quite a while now, although there seemed to have been an air of reluctance to want to explore that very possibility. To that end, the more popular narratives, which have circulated the web for years, generally looked to abrupt environmental shifts as the prime suspect in the demise of the Neanderthals, supposedly in accompaniment with the insufficient resourcefulness of the Neanderthal; the role of modern humans had generally taken somewhat of a back seat in such narratives. 

So What's the Deal with the Neanderthal, Their Demise? - 3

This a carry-over topic from a previous installment: So What's the Deal with the Neanderthal, Their Demise? - 2

To recap:

Were contemporary modern humans [the species that lives on to this day] responsible for the Neanderthals' demise? Or did everything that was working fine for the Neanderthals' survival, prior to the arrival of "anatomically modern" humans, came to a halt for some reason or another?

Introduction: 

The discovery of  Neanderthal remains [see the entry: How are the Media and Schools catching up with Scientific Progress? Pt.4] has naturally raised the curiosity of people, because they seem so close to us humans, and so, many inquiring minds want to know what happened to these extinct human cousins. Preexisting evidence so far only presents sketchy explanations of not only exactly how they (Neanderthals) reached their extinction, but also precisely where and from what ancestral line [although there are guesses as to what that might be] Neanderthals emerged. Notwithstanding significant strides made in the discipline of molecular genetics, as well as new findings in human paleontological record, researchers are still battling out the search for the most solid and parsimonious answers to those aforementioned fronts.

There have been suspicions within the scientific community about the role of modern humans in the demise of Neanderthals for quite a while now, although there seemed to have been an air of reluctance to want to explore that very possibility. To that end, the more popular narratives, which have circulated the web for years, generally looked to abrupt environmental shifts as the prime suspect in the demise of the Neanderthals, supposedly in accompaniment with the insufficient resourcefulness of the Neanderthal; the role of modern humans had generally taken somewhat of a back seat in such narratives. 

So What's the Deal with the Neanderthal, Their Demise? - 2

This a carry-over topic from a previous installment: So What's the Deal with the Neanderthal, Their Demise?

To recap:

Were contemporary modern humans [the species that lives on to this day] responsible for the Neanderthals' demise? Or did everything that was working fine for the Neanderthals' survival, prior to the arrival of "anatomically modern" humans, came to a halt for some reason or another?


Introduction: 

The discovery of  Neanderthal remains [see the entry: How are the Media and Schools catching up with Scientific Progress? Pt.4] has naturally raised the curiosity of people, because they seem so close to us humans, and so, many inquiring minds want to know what happened to these extinct human cousins. Preexisting evidence so far only presents sketchy explanations of not only exactly how they (Neanderthals) reached their extinction, but also precisely where and from what ancestral line [although there are guesses as to what that might be] Neanderthals emerged. Notwithstanding significant strides made in the discipline of molecular genetics, as well as new findings in human paleontological record, researchers are still battling out the search for the most solid and parsimonious answers to those aforementioned fronts.

There have been suspicions within the scientific community about the role of modern humans in the demise of Neanderthals for quite a while now, although there seemed to have been an air of reluctance to want to explore that very possibility. To that end, the more popular narratives, which have circulated the web for years, generally looked to abrupt environmental shifts as the prime suspect in the demise of the Neanderthals, supposedly in accompaniment with the insufficient resourcefulness of the Neanderthal; the role of modern humans had generally taken somewhat of a back seat in such narratives. 

So What's the Deal with the Neanderthal, Their Demise?

Were contemporary modern humans [the species that lives on to this day] responsible for the Neanderthals' demise? Or did everything that was working fine for the Neanderthals' survival, prior to the arrival of "anatomically modern" humans, came to a halt for some reason or another?

Introduction: 

The discovery of  Neanderthal remains [see the entry: How are the Media and Schools catching up with Scientific Progress? Pt.4] has naturally raised the curiosity of people, because they seem so close to us humans, and so, many inquiring minds want to know what happened to these extinct human cousins. Preexisting evidence so far only present sketchy explanations for not only exactly how they (Neanderthals) reached their extinction, but also precisely where and from what ancestral line [although there are guesses as to what that might be] Neanderthals emerged. Notwithstanding significant strides made in the discipline of molecular genetics, as well as new findings in human paleontological record, researchers are still battling out the search for the most solid and parsimonious answers to those aforementioned fronts.

There have been suspicions within the scientific community about the role of modern humans in the demise of Neanderthals for quite a while now, although there seemed to have been an air of reluctance to want to explore that very possibility. To that end, the more popular narratives, which have circulated the web for years, generally looked to abrupt environmental shifts as the prime suspect in the demise of the Neanderthals, supposedly in accompaniment with the insufficient resourcefulness of the Neanderthal; the role of modern humans had generally taken somewhat of a back seat in such narratives.