Mixed Race Studies

Deconstructing Jaco: Genetic Heritage of an Afrikaner

Annals of Human Genetics
Volume 71, Issue 5 (September 2007)
pages 674–688
DOI: 10.1111/j.1469-1809.2007.00363.x

J. M. Greeff, Professor of Genetics
University of Pretoria

It is often assumed that Afrikaners stem from a small number of Dutch immigrants. As a result they should be genetically homogeneous, show founder effects and be rather inbred. By disentangling my own South African pedigree, that is on average 12 generations deep, I try to quantify the genetic heritage of an Afrikaner. As much as 6% of my genes have been contributed by slaves from Africa, Madagascar and India, and a woman from China. This figure compares well to other genetic and genealogical estimates. Seventy three percent of my lineages coalesce into common founders, and I am related in excess of 10 times to 20 founder ancestors (30 times to Willem Schalk van der Merwe). Significant founder effects are thus possible. The overrepresentation of certain founder ancestors is in part explained by the fact that they had more children. This is remarkable given that they lived more than 300 years (or 12 generations) ago. DECONSTRUCT, a new program for pedigree analysis, identified 125 common ancestors in my pedigree. However, these common ancestors are so distant from myself, paths of between 16 and 25 steps in length, that my inbreeding coefficient is not unusually high (f≈0.0019).

Introduction

‘After three centuries of evolution the population structure of the Afrikaners is still far from stable, and there does not appear to be much prospect of its ever attaining uniformity… The numerous and often mutually contradictory genetic statements frequently made about them can consequently all be simultaneously true. The Afrikaner is a product of miscegenation, the last ‘pure European’, pathologically inbred and a manifestation of hybrid vigour, all at the same time.’ (Nurse et al. 1985)

Afrikaners are often considered a rather homogeneous, probably rather inbred, white population of Dutch ancestry. Yet, as the above quotation illustrates, there are uncertainties about the genetic composition of Afrikaners. Due to Afrikaners’ high linkage disequilibrium, they are seen as a fruitful hunting ground for genes associated with disease (Hall et al. 2002). It is thus important that we have a clear appreciation of the Afrikaners’ genetic heritage. In what follows I address the questions of racial admixture, nationalities, founder effects and inbreeding in the Afrikaner. I do so in a novel way: rather than taking a sample of modern Afrikaners and genotyping them, I start with one living Afrikaner and trace most of his South African ancestors. In this way I cast a net into his past and hope to get an impression of what the genetic heritage of a typical Afrikaner may be…

…Given that genealogists could show that as much as 7% of Afrikaner genetic heritage is not of European descent (Heese, 1971), I find it curious that a system such as apartheid worked in South Africa. Seven percent is not a trivial amount, and is equivalent to having slightly more than a great-great-grandparent who was non-European. Since most of this non-European genetic heritage came into the Afrikaner population via female slaves, one would expect that as much as 14% of Afrikaner mitochondrial DNA is not even European. This female bias influx stems from the fact that emigrants were predominantly male, resulting in a male biased sex ratio of adults (Gouws, 1981).

Similarly, genetic studies also give support for this mixed racial ancestry. Working with a number of blood group gene frequencies, Botha & Pritchard (1972) estimated that beween 6–7% admixture between western European and slaves from Africa and the East, and/or Khoikhoi, would be required to explain the allele frequencies. Nurse et al. (1985) listed a number of alleles typical to the Khoisan and Bantu-speaking peoples that are found in low frequencies in Afrikaners (ABO system: A^bantu; glucose-6-phosphate dehydrogenase: Gd^A- and Gd^A; Rhesus: Rº; Haemoglobin C)…

 Read the entire article here.

In conclusion, then, mulattoes may be viewed as the apotheosis, or as the nadir, of Afro-American strength—as the hope or despair of the future. In this regard, these recent studies often differ profoundly. However, they do demonstrate significant points of agreement regarding the historical roots and role of Americans of mixed black-white ancestry—regarding their growing predominance within Afro-America itself, and regarding the very early origins of their distinctiveness. Under certain historical circumstances, their distinctiveness from black Americans was viewed and treated as an asset; under different circumstances it became a liability, particularly when and where white supremacy was threatened. During the Jim Crow era the one-drop ideology was used as a weapon to put them back in place—to prevent the growth of this “mongrelized race” which was neither white nor black. But ironically, it was this oppression which drove mulattoes to identify themselves with black Americans, thereby strengthening Afro-American solidarity and self-assertion…

Patricia Morton, “From Invisible Man to ‘New People’: The Recent Discovery of American Mulattoes,” Phylon (1960-), Volume 46, Number 2 (1985): 106-122.

White Weddings: The incredible staying power of the laws against interracial marriage

Slate
1999-06-15

David Greenberg, Associate Professor History, Journalism & Media Studies
Rutgers University

Last week, the Alabama Senate voted to repeal the state’s constitutional prohibition against interracial marriage, 32 years after the Supreme Court struck down Virginia’s similar ban. Hadn’t these archaic laws gone out with Bull Connor? I asked myself as I read the news account. And haven’t we been hearing that America has rediscovered the melting pot, that in another generation or two we’ll all be “cablinasian,” like Tiger Woods?…

…When you think about it, it makes sense that some Alabamians found it hard to jettison overnight a 300-year-old custom. Laws against interracial marriage—and the taboos against black-white sex that they codify—have been the central weapon in the oppression of African-Americans since the dawn of slavery. President Abraham Lincoln’s detractors charged him in the 1864 presidential campaign with promoting the mongrelization of the races (that’s where the coinage “miscegenation,” which now sounds racist, comes from). Enemies of the 20th-century civil rights movement predicted that the repeal of Jim Crow laws would, as one Alabama state senator put it, “open the bedroom doors of our white women to black men.” Fears of black sexuality have been responsible for some of the most notorious incidents of anti-black violence and persecution, from the Scottsboro Boys to Emmett Till.

Intermarriage bans arose in the late 1600s, when tobacco planters in Virginia needed to shore up their new institution of slavery. In previous decades, before slavery took hold, interracial sex was more prevalent than at any other time in American history. White and black laborers lived and worked side by side and naturally became intimate. Even interracial marriage, though uncommon, was allowed. But as race slavery replaced servitude as the South’s labor force, interracial sex threatened to blur the distinctions between white and black—and thus between free and slave. Virginia began categorizing a child as free or slave according to the mother’s status (which was easier to determine than the father’s), and so in 1691 the assembly passed a law to make sure that women didn’t bear mixed-race children. The law banned “negroes, mulatto’s and Indians intermarrying with English, or other white women, [and] their unlawfull accompanying with one another.” Since the society was heavily male, the prohibition on unions between white women and nonwhite men also lessened the white men’s competition for mates. (In contrast, sex between male slave owners and their female slaves–which often meant rape—was common. It typically met with light punishment, if any at all.)…

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Laura Kina, visual artist and scholar of Asian-American and Mixed-Race Studies

APA Compass
KBOO FM, Community Radio
Portland, Oregon
2011-09-02

Andrew Yeh, Host

Laura Kina, Associate Professor Art, Media and Design and Director Asian American Studies
DePaul University

APA Compass’ Andrew Yeh speaks with artist Laura Kina.

Download to the interview (00:15:50) here.